OOIR: Observatory of International Research

Papers

(The TQCC of Human Reproduction Update is 42. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-12-01 to 2025-12-01.)

Article	Citations
BMI in children aged 1–18 years conceived after ART with fresh and frozen embryo transfer: a systematic review and meta-analyses	459
Comparison of dietary and physical activity behaviors in women with and without polycystic ovary syndrome: a systematic review and meta-analysis of 39 471 women	137
Building a human pluripotent stem cell-based gonadal niche: improving in vitro systems with in vivo insigh	128
Maternal and perinatal outcomes in twin pregnancies following assisted reproduction: a systematic review and meta-analysis involving 802 462 pregnancies	124
The pathophysiological role of estrogens in the initial stages of pregnancy: molecular mechanisms and clinical implications for pregnancy outcome from the periconceptional period to end of the first t	114
Functional hypothalamic amenorrhoea and polycystic ovarian morphology: a narrative review about an intriguing association	113
Fresh and cryopreserved ovarian tissue transplantation for preserving reproductive and endocrine function: a systematic review and individual patient data meta-analysis	101
Ultrasonographic criteria in the diagnosis of polycystic ovary syndrome: a systematic review and diagnostic meta-analysis	98
The complicated ART of finding consensus on family-building health policy: a comment on the IFFS consensus document	94
Correction to: Fresh and cryopreserved ovarian tissue transplantation for preserving reproductive and endocrine function: a systematic review and individual patient data meta-analysis	93
What is the optimal GnRH antagonist protocol for ovarian stimulation during ART treatment? A systematic review and network meta-analysis	87
Total fertilization failure after ICSI: insights into pathophysiology, diagnosis, and management through artificial oocyte activation	85
Driving factors in treatment decision-making of patients seeking medical assistance for infertility: a systematic review	84
Preconception lifestyle interventions for women—a systematic review and meta-analysis of intervention characteristics and behaviour change techniques	82
Autophagy: a multifaceted player in the fate of sperm	81
RNA modifications in female reproductive physiology and disease: emerging roles and clinical implications	79
Temporal trends in sperm count: a systematic review and meta-regression analysis of samples collected globally in the 20th and 21st centuries	79
Reproductive ability in survivors of childhood, adolescent, and young adult Hodgkin lymphoma: a review	77
HLA Class Ib-receptor interactions during embryo implantation and early pregnancy	75
Obstetric and perinatal outcomes of singleton pregnancies after blastocyst-stage embryo transfer compared with those after cleavage-stage embryo transfer: a systematic review and cumulative meta-analy	68
Prenatal and postnatal exposures to endocrine disrupting chemicals and timing of pubertal onset in girls and boys: a systematic review and meta-analysis	66
Obstetric, neonatal, and child health outcomes following embryo biopsy for preimplantation genetic testing	66
Reply: Artificial cycle frozen embryo transfer and obstetric adverse outcomes: association or causation?	61
The neglected members of the family: non-BRCAmutations in the Fanconi anemia/BRCA pathway and reproduction	61
Assessing the influence of preconception diet on female fertility: a systematic scoping review of observational studies	59

IVF and human evolution	58
Meiotic recombination: insights into its mechanisms and its role in human reproduction with a special focus on non-obstructive azoospermia	56
The LH surge and ovulation re-visited: a systematic review and meta-analysis and implications for true natural cycle frozen thawed embryo transfer	52
What is the expected live birth rate per thawed oocyte?	52
Infertility treatment and offspring blood pressure—a systematic review and meta-analysis	45
Early programming of reproductive health and fertility: novel neuroendocrine mechanisms and implications in reproductive medicine	45
Correction to: Evaluating interventions and adjuncts to optimize pregnancy outcomes in subfertile women: an overview review	45
Novel microarchitecture of human endometrial glands: implications in endometrial regeneration and pathologies	45
Administration of growth hormone improves endometrial function in women undergoing in vitro fertilization: a systematic review and meta-analysis	44
COVID-19 in pregnant women: a systematic review and meta-analysis on the risk and prevalence of pregnancy loss	44
Endometrial scratching in women undergoing IVF/ICSI: an individual participant data meta-analysis	43
Reply. How much evidence is needed to stop calling endometrial scratching ‘controversial’?	43
Reply: What is the expected live birth rate per thawed oocyte?	43
Fertility in transgender and gender diverse people: systematic review of the effects of gender-affirming hormones on reproductive organs and fertility	42
Development and validation of a gonadotropin dose selection model for optimized ovarian stimulation in IVF/ICSI: an individual participant data meta-analysis	42