OOIR: Observatory of International Research

Papers

(The TQCC of Human Reproduction Update is 38. 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 2022-01-01 to 2026-01-01.)

Article	Citations
BMI in children aged 1–18 years conceived after ART with fresh and frozen embryo transfer: a systematic review and meta-analyses	479
Building a human pluripotent stem cell-based gonadal niche: improving in vitro systems with in vivo insigh	133
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	132
Maternal and perinatal outcomes in twin pregnancies following assisted reproduction: a systematic review and meta-analysis involving 802 462 pregnancies	121
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	116
Functional hypothalamic amenorrhoea and polycystic ovarian morphology: a narrative review about an intriguing association	108
Ultrasonographic criteria in the diagnosis of polycystic ovary syndrome: a systematic review and diagnostic meta-analysis	98
Fresh and cryopreserved ovarian tissue transplantation for preserving reproductive and endocrine function: a systematic review and individual patient data meta-analysis	95
The complicated ART of finding consensus on family-building health policy: a comment on the IFFS consensus document	90
Correction to: Fresh and cryopreserved ovarian tissue transplantation for preserving reproductive and endocrine function: a systematic review and individual patient data meta-analysis	89
Total fertilization failure after ICSI: insights into pathophysiology, diagnosis, and management through artificial oocyte activation	88
What is the optimal GnRH antagonist protocol for ovarian stimulation during ART treatment? A systematic review and network meta-analysis	87
Preconception lifestyle interventions for women—a systematic review and meta-analysis of intervention characteristics and behaviour change techniques	85
Driving factors in treatment decision-making of patients seeking medical assistance for infertility: a systematic review	83
Temporal trends in sperm count: a systematic review and meta-regression analysis of samples collected globally in the 20th and 21st centuries	82
HLA Class Ib-receptor interactions during embryo implantation and early pregnancy	82
Reproductive ability in survivors of childhood, adolescent, and young adult Hodgkin lymphoma: a review	77
RNA modifications in female reproductive physiology and disease: emerging roles and clinical implications	70
Obstetric, neonatal, and child health outcomes following embryo biopsy for preimplantation genetic testing	68
Prenatal and postnatal exposures to endocrine disrupting chemicals and timing of pubertal onset in girls and boys: a systematic review and meta-analysis	68
Reply: Artificial cycle frozen embryo transfer and obstetric adverse outcomes: association or causation?	63
IVF and human evolution	61
Assessing the influence of preconception diet on female fertility: a systematic scoping review of observational studies	59
The neglected members of the family: non-BRCAmutations in the Fanconi anemia/BRCA pathway and reproduction	57
Meiotic recombination: insights into its mechanisms and its role in human reproduction with a special focus on non-obstructive azoospermia	55

What is the expected live birth rate per thawed oocyte?	54
The LH surge and ovulation re-visited: a systematic review and meta-analysis and implications for true natural cycle frozen thawed embryo transfer	53
Early programming of reproductive health and fertility: novel neuroendocrine mechanisms and implications in reproductive medicine	49
Correction to: Evaluating interventions and adjuncts to optimize pregnancy outcomes in subfertile women: an overview review	48
Infertility treatment and offspring blood pressure—a systematic review and meta-analysis	47
COVID-19 in pregnant women: a systematic review and meta-analysis on the risk and prevalence of pregnancy loss	47
Administration of growth hormone improves endometrial function in women undergoing in vitro fertilization: a systematic review and meta-analysis	46
Reply. How much evidence is needed to stop calling endometrial scratching ‘controversial’?	45
Reply: What is the expected live birth rate per thawed oocyte?	45
Endometrial scratching in women undergoing IVF/ICSI: an individual participant data meta-analysis	45
Advances in non-hormonal male contraception targeting sperm motility	42
Fertility in transgender and gender diverse people: systematic review of the effects of gender-affirming hormones on reproductive organs and fertility	41
Development and validation of a gonadotropin dose selection model for optimized ovarian stimulation in IVF/ICSI: an individual participant data meta-analysis	41
Molecular insights into sperm head shaping and its role in human male fertility	38
Moving toward totipotency: the molecular and cellular features of totipotent and naive pluripotent stem cells	38
Does the holy grail of the evidence pyramid vindicate the controversial practice of endometrial scratching or is there room for healthy skepticism?	38