Diseases of the Colon & Rectum

Article	Citations
Association of Program Directors for Colon and Rectal Surgery: First 4 Decades	270
CRC Screening, A Long Way Off	145
Research Perspective on: “Impact of Anastomotic Leakage After Colorectal Cancer Surgery on Quality of Life: A Systematic Review”	104
Correlation Does Not Assess Agreement	63
Administration of an Anal Bulking Agent With Polyacrylate-Polyalcohol Copolymer Particles Versus Endoanal Electrical Stimulation With Biofeedback for the Management of Mild and Moderate Anal Incontine	55
Da Vinci SP System Optimized for Intersphincteric Resection of Very Low Rectal Cancer	50
Comparison of Rubber Band Ligation and Hemorrhoidectomy in Patients With Symptomatic Hemorrhoids Grade III: Correspondence	48
Is Low Compliance a Red Flag or a Rational Rejection of Extended Venous Thromboembolism Prophylaxis?	45
Grading Complications in Pelvic Exenteration: Limitations of Current Classification Systems	41
Reply	37
July 2022 translations	34
Lateral Pelvic Sidewall Nodes	32
Colon and Rectal Surgery Regional Society Meetings	31
Think Twice: De-implementation of Laboratory Testing After Colorectal Surgery	28
Management of the Patient With a Retracted Loop Ileostomy Located in a Crease	28
How Do You Code Colonoscopies Correctly?	28
Optimized House Flap Design for Severe Anal Stricture Reconstruction	28
Assessing the Benefit of Additional Pudendal Nerve Block for Posthemorrhoidectomy Pain Control	26
August 2024 Translations	25
December 2023 Translations	25
Laparoscopic Duhamel Procedure: Treatment for Adult Hirschprung’s Disease	25
Comparative Study of Diluted Hydrogen Peroxide and Sulfur Hexafluoride in the Contrast-Enhanced Ultrasound Assessment of Anal Fistulas	25
Dilip’s Transmucosal Internal Sphincterotomy: A Simplified Approach to Lateral Internal Sphincterotomy for Fissure in Ano	23
The Middle Compartment: Keystone or Cul De Sac?	21
A Novel Use for Pelvic MRI Scans to Estimate Lean Body Mass and Screen for Sarcopenia in Patients With Rectal Cancer	20

Reply	20
Expert Commentary on the Evaluation and Management of Lower GI Bleeding	19
Expert Commentary on Kaposi Sarcoma of the Anus: What Does the Colorectal Surgeon Need to Know?	19
Comment on: Transanal Total Mesorectal Excision Versus Anterior Total Mesorectal Excision for Rectal Cancer: A Propensity Score–Matched, Population-Based Study in Catalonia, Spain	19
Colon and Rectal Surgery Regional Society Meetings	18
Robotic Transanal Minimally Invasive Surgery: Rectourethral Fistula Closure	18
February 2023 translations	18
Laparoscopic Abdominoperineal Resection With Bilateral Seminal Vesicle Excision: Video Presentation	18
Venous Thromboembolism Prophylaxis Practice Patterns, Outcomes, and Risk Stratification After Surgery for IBD: A National Surgical Quality Improvement Program IBD Collaborative Study	17
More Is Not Better When It Comes to Treating Rectal Cancer With Multimodal Chemoradiation Beyond the Standard Radiation Dose of 5040 cGy	16
The Differential Diagnosis	16
Patients With a Pathologic Near-Complete Response After Mandatory Total Mesorectal Excision Do Not Provide an Appropriate Control Group for Patients With Local Regrowth	16
Brave New World: Analysis of Early Clinical Experience with Molecular Sequencing in the Treatment of Rectal Cancer	16
Announcements	16
The Risk of Distant Metastases in Patients With Clinical Complete Response Managed by Watch and Wait After Neoadjuvant Therapy for Rectal Cancer: The Influence of Local Regrowth in the International W	16
Robot-Assisted Surgery for Colorectal Cancer in Adults Aged 75 Years or Older: Value for Money?	16
Patient Satisfaction With Long-term Sacral Neuromodulation for Fecal Incontinence: Experience From a Single Tertiary Center	16
What To Do With Suspected Nodal Regrowth on MRI During Follow-Up in an Organ Preservation Approach for Rectal Cancer?	15
Selected Abstracts	15
RAPIDO: Rest in Peace	15
Short- and Long-term Outcomes After Continent Ileostomy: An Often Forgotten Option for Patients After Proctocolectomy	15
First Fully Endoscopic End-to-End Colonic Anastomoses With a Novel Endoscopic Device: A Feasibility Study in a Porcine Model	15
Colon and Rectal Surgery Regional Society Meetings	15
July 2024 Translations	14
Transanal Excision: Tips and Tricks	14
Expert Commentary on Diagnosis and Management of Idiopathic Pouchitis	14
What Every Colorectal Surgeon Should Know About the American Medical Association/Specialty Society Relative Value Scale Update Committee	14
Colorectal Adenomas Under Age 50	14
Research Perspective on “Risk of Postoperative Venous Thromboembolism Following Benign Colorectal Surgery: Systematic Review and Meta-analysis”	14
Ischiorectal Fossa Tumors: 30-year Single-Institution Experience	14
2022 American Society of Colon and Rectal Surgeons Traveling Fellow Report	14
Expert Commentary on Rectal Stump Management in IBD	14
The “Classification Pendulum” of Stage I Colorectal Cancer: A National Level Analysis of the Survival Difference Between T1 and T2 Colorectal Cancer	13
Expert Commentary on Lateral Pelvic Sidewall Nodes	13
Short- and Long-term Outcomes After Laparoscopic Emergency Resection of Left-Sided Obstructive Colon Cancer: A Nationwide Propensity Score–Matched Analysis	13
Robotic Splenic Flexure Takedown: Single Docking Crossed-Arm Technique	13
Clinical Practice Guidelines in Colorectal Surgery: Do We Need to Randomize Everything?	13
We Must Never Forget—Biology Is King	13
Predicting Mortality Within 90 Days of First Intervention in Patients With Left-Sided Obstructive Colon Cancer	13
Rectal Advancement Flap for a Rectoneovaginal Fistula	13
Management of Acute and Chronic Pouchitis	13
A Predictive Model for Anastomotic Complications After Sphincter-Preserving Surgery for Rectal Cancer: Integrating Clinical and Anatomical Risk Factors	12
Robotic Ventral Mesh Rectopexy With Repair of Perineal Hernia	12
Combined Radial Incision and Steroid Injection for Refractory Colorectal Stenosis After Pull-Through Surgery in Hirschsprung Disease: An Innovative Conservative Treatment	12
LIGATION OF INTERSPHINCTERIC FISTULA TRACT	12
Influence of Minimally Invasive Resection Technique on Sphincter Preservation and Short-term Outcome in Low Rectal Cancer in the Netherlands	12
Neoadjuvant Immune Checkpoint Inhibition Improves Organ Preservation in T4bM0 Colorectal Cancer With Mismatch Repair Deficiency: A Retrospective Observational Study	12
Assessment of Patient-Reported Outcomes in Patients With Anal Squamous-Cell Cancer Undergoing Combined Modality Therapy	12
Lack of Complete Pretreatment Staging Is Associated With Omission of Neoadjuvant Therapy for Rectal Cancer: A Statewide Study	12
Role of Neoadjuvant Immune Checkpoint Inhibitors in Locally Advanced Rectal Cancer: A Systematic Review of Currently Available Studies	12

Reoperations and Long-term Survival of Kock’s Continent Ileostomy in Patients With IBD: A Population-Based National Cohort Study From Sweden	12
Perioperative Metformin Treatment to Reduce Postoperative Hyperglycemia After Colon Cancer Surgery: A Randomized Clinical Trial	12
Robotic Total Mesorectal Excision: Stepwise Narrative	12
Blinded Intraoperative Quantitative Indocyanine Green Metrics Associate With Intestinal Margin Acceptance in Colorectal Surgery	12
The Surgical Management of Ileal Pouch Strictures	12
Patient-Derived Tumor Organoids Can Predict the Progression-Free Survival of Patients With Stage IV Colorectal Cancer After Surgery	12
The American Society of Colon and Rectal Surgeons Clinical Practice Guidelines for the Evaluation and Management of Chronic Constipation	12
Incidence and Risk Factors for Venous Thromboembolism Events After Rectal Prolapse Surgery	11
Repopulation of Rectal Cancer May Explain Worse Local Control After Short-Course Radiation Therapy in the RAPIDO Trial	11
Specialty-Certified Colorectal Surgeons Demonstrate Favorable Short-term Surgical Outcomes for Laparoscopic Low Anterior Resection: Assessment of a Japanese Nationwide Database	11
The Legacy of Campaign_52: What the Future Holds for Female Pelvic Fistulas in Africa	11
Surveillance and Management of Pouch Neoplasia in Familial Adenomatous Polyposis: A Systematic Review	11
Chemodenervation of Internal Anal Sphincter With Botox Injection	11
The American Society of Colon and Rectal Surgeons Clinical Practice Guidelines for Ostomy Surgery	11
Two-Stage Turnbull-Cutait Pull-Through Coloanal Anastomosis for Recurrent Rectovaginal Fistula	11
Being Curious	11
Consensus Definitions and Interpretation Templates for Dynamic Ultrasound Imaging of Defecatory Pelvic Floor Disorders: Proceedings of the Consensus Meeting of the Pelvic Floor Disorders Consortium of	11
Global Use and Outcomes of Endoscopic Stenting in Acute Malignant Left-Sided Colonic Obstruction: A Secondary Analysis of APOLLO, An International, Prospective Cohort Study	11
TAMIS Procedure for Rectal Neuroendocrine Tumor: Step by Step	11
Avoiding Exenteration in Anterior Margin–Positive Rectal Cancer After Total Neoadjuvant Therapy With Immunotherapy	11
Corrigendum	11
The Cumulative Incidence and Progression of Ileal Pouch Adenomas in Patients With Familial Adenomatous Polyposis	10
Colon and Rectal Surgery Regional Society Meetings	10
Correlation Between the Severity of Adhesions and Desmoid Disease in Patients With Familial Adenomatous Polyposis: A Prospective Cohort Study	10
Research Perspective on The Role of Preoperative Imaging in the Detection of Lateral Lymph Node Metastases in Rectal Cancer: A Systematic Review and Diagnostic Test Meta-analysis	10
Robotic Low Anterior Resection After Transanal Minimally Invasive Surgery and Chemoradiation Therapy for T1N1a Rectal Cancer	10
Readability of Patient Education Materials From the American Society of Colon and Rectal Surgeons Website: An Opportunity to Improve Health Care Access and Quality	10
Being a Colonoscopist	10
The American Society of Colon and Rectal Surgeons Clinical Practice Guidelines for the Management of Hemorrhoids	10
Should Local Excision After Neoadjuvant Therapy Be Included in the National Guidelines for the Treatment of Locally Advanced Rectal Cancer?	10
Reply	10
Evaluation and Management of Supralevator Abscess	10
Reply	10
Controlling Oligopolyposis With Colonoscopy: A Cohort Study	10
Predictors and Outcomes of Upstaging in Rectal Cancer Patients Who Did Not Receive Preoperative Therapy	10
Racial Differences in Aging-Related Deficits Among Older Adults With Colorectal Cancer	10
Perioperative Malnutrition	10
Locoregional Recurrence in the RAPIDO Trial and the Importance of the Quality of the Resected Specimen: Does Surgical Resection Matter?	10
Laparoscopic Extended Left Hemicolectomy With Deloyers Procedure	10
Laparoscopic Versus Transanal IPAA for Ulcerative Colitis: A Patient-Centered Treatment Trade-Off Study	10
Management of Colorectal Cancer With Synchronous Liver Metastases	10
Ice Packing Versus Warm Sitz Baths for Post-hemorrhoidectomy Pain Management: A Randomized Controlled Trial	10
Combined Robotic Ventral Mesh Rectopexy and Sacrocolpopexy for Multicompartmental Pelvic Organ Prolapse	10
March 2022 translations	9
Statin Therapy Is Associated With Decreased 90-Day Postoperative Mortality After Colon Cancer Surgery	9
Completion Total Mesorectal Excision After Transanal Local Excision of Early Rectal Cancer: A Systematic Review and Meta-analysis	9
Short- and Long-term Outcomes of Ileal Pouch Anal Anastomosis Construction in Obese Patients With Ulcerative Colitis	9
Laparoscopic Radical Surgery for Right-Sided Colon Cancer With Lymph Node Metastasis in the Gastrocolic Ligament	9
Improvised Techniques for Enhanced Detection of Crohn’s Strictures During Surgery	9
Textbook Outcomes of Minimally Invasive Total Mesorectal Excision: A Composite Tool to Assess and Compare Outcomes for Benchmarking	9
Retroperitoneal Approach for Total Colectomy in Minimally Invasive Treatment of Synchronous Multiple Colon Cancer	9
Improved Prediction of Surgical-Site Infection After Colorectal Surgery Using Machine Learning	9
Announcements	9
Restorative Proctocolectomy for Ulcerative Colitis: Different Strategies for Different Situations	9
Multicenter Study of Drain Fluid Amylase as a Biomarker for the Detection of Anastomotic Leakage After Ileal Pouch Surgery Without a Diverting Ileostomy	9
The American Society of Colon and Rectal Surgeons Clinical Practice Guidelines for the Management of Colon Cancer	9
Recommendations for Optimal Endoscopic Localization of Colorectal Neoplasms: A Delphi Consensus of National Experts	8
Primary Care Physicians and Patients Prefer Colonoscopy for Colorectal Cancer Screening	8
Announcements	8
The Louis J. Hirschman Lineage (Hirschman to Nigro): The Rise of a Society and the Fall of a University Department of Colon and Rectal Surgery (Part 1)	8
Selected Abstracts	8
Quality Still Counts	8
Liposomal Bupivacaine Transversus Abdominis Plane Blocks in Laparoscopic Colorectal Resections: A Single-Institution Randomized Controlled Trial	8
Lack of Regular Access to Primary Care Physician Associated With Increased Emergency Department Visits Related to Survivorship Needs Among Rectal Cancer Survivors	8
Flatus Incontinence and Fecal Incontinence: A Case-Control Study	8
Corrigendum	8
Announcements	8
Colorectal Cancer Risk is a Family Affair	8
January 2022 translations	8
Announcements	8
Take a Selfie: Optimizing Surgeon–Patient Interactions in Proctologic Disease Record-Keeping Among Gen Z and Millennial Patients	8
Tumor Marker Trajectories and Survival Analysis in Patients With Normal Carcinoembryonic Antigen Ranges After Colorectal Cancer Resection	8
Abridged Abstracts From the Medical Literature	8
Delayed TME Surgery in a Watch-and-Wait Strategy After Neoadjuvant Chemoradiotherapy for Rectal Cancer: An Analysis of Hospital Costs and Surgical and Oncological Outcomes	8
Laparoscopic Resection in Ileocecal Endometrioma	8
Robotic Intracorporeal Fully Stapled Modified Kono-S Anastomosis: A Technical Demonstration	8
Initial Experience With Single-Port Robotic Right Colectomies: Results of an Investigator-Initiated Investigational Device Exemption Study Using a Novel Single-Port Robotic Platform	8
Robotic Ventral Rectopexy Using Tensor Fascia Lata Graft	7
Conservative Management of Perianal Fistulas Described By İbn Al-Quff Al Karaki (1232–1286 CE): Old Contributions to Modern Practice	7
Gracilis Muscle Interposition for the Treatment of Rectovaginal Fistula: A Systematic Review and Pooled Analysis	7

June 2024 Translations	7
Perianal and Rectal Lesions in the Monkeypox Outbreak: Correspondence	7
Oral Antibiotics Bowel Preparation Without Mechanical Preparation for Minimally Invasive Colorectal Surgeries: Current Practice and Future Prospects	7
Response to “Specialization Reduces Cost Associated With Colon Cancer Care: A Cost Analysis”	7
Minimally Invasive Robotic Surgery in Lateral Lymph Node Dissection by Pelvic Floor First Approach	7
Trends for the Surgical Management of Rectal Prolapse in the Elderly: A Contemporary Analysis of the National Quality Improvement Program	7
Is Ligation of the Intersphincteric Fistula Tract Useful in Crohn’s Disease of the Ileal Pouch Complicated by an Anal Fistula?	7
Characteristics and Outcomes of Right- Versus Left-Sided Early-Onset Colorectal Cancer	7
Anastomosis-Related Complications After Stapled Anastomosis With Reinforced Sutures in Transanal Total Mesorectal Excision for Low Rectal Cancer: A Retrospective Single-Center Study	7
Reply	7
Colon and Rectal Surgery Regional Society Meetings	7
Expert Commentary on Management of Colorectal Peritoneal Metastases	7
December 2024 Translations	7
Integrating ctDNA and iRECIST to Guide Surgery After Immunotherapy in MSI-H Colorectal Cancer	7
Favorable Survival After Screening for Young-Onset Colorectal Cancer: Benefits of Screening in Young Adults	7
The Impact of Prolonged Operative Time Associated With Minimally Invasive Colorectal Surgery: A Report From the Surgical Care Outcomes Assessment Program	7
CREATEing Community for Colorectal Surgeon-Scientists	7
Reply	7
Bridging Gaps to Improve Care Models for Patients at Risk for Anal Dysplasia and Cancer: A Call to Action	7
NOBLADS—External Validation of a Risk Scoring System for Severe Acute Lower Gastrointestinal Bleeding	7
Conventional Versus High-Complexity Total Pelvic Exenteration For Locally Advanced and Locally Recurrent Rectal Cancer: An International Multicenter Study	7
Robotic Low Anterior Resection: Avoiding a Stoma in the Deep Pelvis	7
V-Y Advancement Flap for Correcting Severe Perianal Fistulizing Crohn’s Disease	7
Correlation of Colorectal Surgical Skill With Patient Outcomes: A Cautionary Tale	7
Correlation Between the Distance to Mesorectal Fascia and Prognosis of cT3 Rectal Cancer: Results of a Multicenter Study From China	7
Enhanced Recovery Program Reduced Mortality and Shortened Length of Hospital Stay in Patients with Colorectal Anastomotic Leak Requiring Reoperation	7
Perineal Approach, the Closest Approach to the Pelvic Floor, in Perineal Hernia Repair After Abdominoperineal Resection	7
Announcements	7
Long-term Outcomes of Minimally Invasive Versus Open Abdominoperineal Resection for Rectal Cancer: A Single Specialized Center Experience	7
Selected Abstracts	6
Prognostic Significance of Systemic Inflammation Indices by K-ras Status in Patients With Metastatic Colorectal Cancer	6
Intracorporeal Side-to-End Anastomosis During Robotic Stapled Circular Anastomosis: A Primer	6
Abridged Abstracts from the Medical Literature	6
Colon and Rectal Surgery Regional Society Meetings	6
Total Neoadjuvant Therapy Significantly Increases Complete Clinical Response	6
The Negative Prognostic Impact of Lymph Node Skip Metastasis in Stage III Colon Cancer With pN1 Disease: A Single-Center and Retrospective Cohort Study	6
Oncological Outcomes of Intersphincteric Resection Versus Abdominoperineal Resection for ypT3 Low Rectal Cancer After Neoadjuvant Chemoradiotherapy: A Multicenter Retrospective Analysis	6
Prospective Randomized Trial of Immediate Postoperative Use of Regular Diet Versus Clear Liquid Diet in Major Colorectal Surgery	6
Burnout: Well Done or Medium Rare	6
Sphinkeeper Prosthesis for Fecal Incontinence	6
Stoma-Free Intersphincteric Resection in Low Rectal Cancer Without Radiotherapy: A Prospective Cohort Study on Safety and Recovery	6
Double-Barreled Wet Colostomy After Pelvic Exenteration	6
Trajectories of Quality of Life After Pelvic Exenteration: A Latent Class Growth Analysis	6
Surgical Repair of Postoperative Perineal Hernia: A Case for the Perineal Approach	6
Laparoscopic Sacral Mesh Fixation for Ventral Rectopexy: Clinical Implications From a Cadaver Study	6
Impact of Intraoperative Decision-Making on Pathological Margin Status in Patients Undergoing Pelvic Exenteration for Locally Recurrent Rectal Cancer	6
Robotic NICE Procedure Using Handsewn Technique	6
A Mobile Phone App Improves Patient-Physician Communication and Reduces Emergency Department Visits After Colorectal Surgery	6
Response to Letter to the Editor	6
Being Compassionate	6
Expert Commentary on ctDNA Testing for Minimal Residual Disease Assessment and Surveillance	6
Transabdominal Perineal Hernia Mesh Repair	6
Exploring the Somatic Mutation Landscape of T4N0: A Comparative Perspective on Late Stage II and Stage III Colon Cancer	6
Improved Survival After Adjuvant Therapy in Locally Advanced Rectal Cancer Patients With Pathologic Complete Response	6
Can We Do Better Than a Colectomy?	6
EndoRobotic Submucosal Dissection After Total Neoadjuvant Treatment in Rectal Cancer	6
The American Society of Colon and Rectal Surgeons Clinical Practice Guidelines for the Management of Anal Fissures	6
Providing Value to Patients: Operating Outside the Bubble	6
Prehabilitation for Colorectal Cancer Surgery	6
Lateral Pelvic Nodal Management and Patterns of Failure in Patients Receiving Short-Course Radiation for Locally Advanced Rectal Cancer	6
The History of the New Jersey Salvati-Rubin Colon and Rectal Surgery Residency (Rutgers Robert Wood Johnson Medical School)	6
Watch and Wait for Rectal Cancer: Insights From American Society of Colon and Rectal Surgeons Members	6
Research Perspective on: Association Between Cross-Stapling Technique in Mechanical Colorectal Anastomosis and Short-term Outcomes	6
Colon and Rectal Surgery Regional Society Meetings	6
Colon and Rectal Surgery Regional Society Meetings	6
Gender and Racial Diversity Among Colon and Rectal Surgery Trainees and Leaders	6
The Specific Aims Page: A Primer	6
Robotic Single-Port Transstomal Proctectomy and IPAA Construction With Exoscope-Assisted Transanal Transection and Single-Stapled Anastomosis for Ulcerative Colitis	6
Are All Patients Suitable for the Watch-and-Wait Approach After Clinical Complete Response?	6
Measurement of Disease Activity of Pouchitis	5
Impact of Low Ligation on Bowel Perfusion and Anastomotic Leakage in Minimally Invasive Rectal Cancer Surgery: A Post Hoc Analysis of a Randomized Controlled Trial	5
Guideline-Concordant Extended Pharmacologic Venous Thromboembolism Prophylaxis Utilization After Colorectal Cancer Resection Is Low Regardless of Patient Factors or Hospital Characteristics	5
Transition of Care Barriers in Pediatric Patients With Anorectal Malformation	5
Management of Rectal Stricture After En-Bloc Endoscopic Submucosal Dissection for a Circumferential Lateral Spreading Tumor	5
Abridged Abstracts From the Medical Literature	5
Numbers Do Not Tell the Whole Story	5
Comment On: Selective Lateral Pelvic Lymph Node Dissection After Preoperative Chemoradiotherapy in Middle/Low Rectal Cancer	5
Selected Abstracts	5
Is Dilip’s Transmucosal Internal Sphincterotomy a Modification of Closed Lateral Internal Sphincterotomy?	5
Ileal Pouch Dysfunction	5
Prognostic Impact of Extramural Lymphatic, Vascular, and Perineural Invasion in Stage II Colon Cancer: A Comparison With Intramural Invasion	5
Quality of Life, Functional Outcomes, and Recurrence After Resection Rectopexy Versus Ventral Mesh Rectopexy for Rectal Prolapse Repair	5
Excisional Hemorrhoidectomy: Closed Technique	5
Expert Commentary on Acute Uncomplicated Diverticulitis: Updated Evidence for Same Old Questions	5
Being a Patient	5
Dose-Intensified Infliximab Rescue Therapy for Severe Ulcerative Colitis Does Not Reduce Short-term Colectomy Rates or Increase Postoperative Complications	5
Colon and Rectal Surgery Regional Society Meetings	5
How Do You Code a Low Anterior Resection With a Diverting Loop Ileostomy?	5
Risk Factors for Persistent Postoperative Opioid Use After Surgery for IBD: An Observational Cohort Study	5
The Learning Curve for Robotic Lateral Pelvic Lymph Node Dissection for Rectal Cancer: A View From the West	5
Functional Outcome of Laparoscopic-Assisted Resection Versus Open Resection of Rectal Cancer: A Secondary Analysis of the Australasian Laparoscopic Cancer of the Rectum Trial	5
Comment On: Impact of Internal Anal Sphincter Division on Continence Disturbance in Female Patients	5
Leadership: What I Now Understand	5
Low Anterior Resection With Transanal Specimen Extraction Using Rectal Eversion Technique	5
Transanal Total Mesorectal Excision Versus Anterior Total Mesorectal Excision for Rectal Cancer: A Propensity Score Matched, Population-Based Study in Catalonia, Spain	5