OOIR: Observatory of International Research

Papers

(The H4-Index of Human Reproduction is 41. 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 2020-11-01 to 2024-11-01.)

Article	Citations
Semen impairment and occurrence of SARS-CoV-2 virus in semen after recovery from COVID-19	152
International Committee for Monitoring Assisted Reproductive Technologies world report: assisted reproductive technology, 2014	143
Erastin induces ferroptosis via ferroportin-mediated iron accumulation in endometriosis	137
20 years of the European IVF-monitoring Consortium registry: what have we learned? A comparison with registries from two other regions	123
Ovarian follicular function is not altered by SARS–CoV-2 infection or BNT162b2 mRNA COVID-19 vaccination	118
Definition, diagnostic and therapeutic options in recurrent implantation failure: an international survey of clinicians and embryologists	99
Twin Peaks: more twinning in humans than ever before	99
Measuring the global disease burden of polycystic ovary syndrome in 194 countries: Global Burden of Disease Study 2017	85
Impact of low serum progesterone levels on the day of embryo transfer on pregnancy outcome: a prospective cohort study in artificial cycles with vaginal progesterone	84
Septum resection versus expectant management in women with a septate uterus: an international multicentre open-label randomized controlled trial	83
Is fertility reduced in ovulatory women with polycystic ovary syndrome? An opinion paper	78
Fertility patients under COVID-19: attitudes, perceptions and psychological reactions	76
Effects of COVID-19 and mRNA vaccines on human fertility	70
Mitochondria-targeted therapeutics, MitoQ and BGP-15, reverse aging-associated meiotic spindle defects in mouse and human oocytes	68
The risk of birth defects with conception by ART	68
Individualised luteal phase support in artificially prepared frozen embryo transfer cycles based on serum progesterone levels: a prospective cohort study	66
Persistence of SARS-CoV-2 in the first trimester placenta leading to transplacental transmission and fetal demise from an asymptomatic mother	65
Adenomyosis of the inner and outer myometrium are associated with different clinical profiles	60
Mapping the entire functionally active endometrial microbiota	60
Obstetric and perinatal outcomes following programmed compared to natural frozen-thawed embryo transfer cycles: a systematic review and meta-analysis	57
Impact of trophectoderm biopsy on obstetric and perinatal outcomes following frozen–thawed embryo transfer cycles	54
Safety of fertility preservation techniques before and after anticancer treatments in young women with breast cancer: a systematic review and meta-analysis	54
The healthy female microbiome across body sites: effect of hormonal contraceptives and the menstrual cycle	54
Systematic evaluation of endometriosis by transvaginal ultrasound can accurately replace diagnostic laparoscopy, mainly for deep and ovarian endometriosis	53
Should we be measuring DNA damage in human spermatozoa? New light on an old question	52

Reduced FSH and LH action: implications for medically assisted reproduction	51
Hereditary thrombophilia and recurrent pregnancy loss: a systematic review and meta-analysis	51
Analysing endometrial microbiome: methodological considerations and recommendations for good practice	51
Pregnancy outcomes following in vitro fertilization frozen embryo transfer (IVF-FET) with or without preimplantation genetic testing for aneuploidy (PGT-A) in women with recurrent pregnancy los	50
The changing tide of human fertility	49
High birth weight and large-for-gestational-age in singletons born after frozen compared to fresh embryo transfer, by gestational week: a Nordic register study from the CoNARTaS group	48
Sperm acquire epididymis-derived proteins through epididymosomes	48
Artificial intelligence in the fertility clinic: status, pitfalls and possibilities	46
Exome sequencing reveals variants in known and novel candidate genes for severe sperm motility disorders	45
Analysis of serum and endometrial progesterone in determining endometrial receptivity	45
ART in Europe, 2019: results generated from European registries by ESHRE	44
IVF under COVID-19: treatment outcomes of fresh ART cycles	44
Recommendations from the 2023 International Evidence-based Guideline for the Assessment and Management of Polycystic Ovary Syndrome	44
Three-dimensional microengineered vascularised endometrium-on-a-chip	44
Sperm count is increased by diet-induced weight loss and maintained by exercise or GLP-1 analogue treatment: a randomized controlled trial	43
Development of an artificial intelligence model for predicting the likelihood of human embryo euploidy based on blastocyst images from multiple imaging systems during IVF	42
Matrix-free 3D culture supports human follicular development from the unilaminar to the antral stage in vitro yielding morphologically normal metaphase II oocytes	41
Global transcriptomic changes occur in uterine fluid-derived extracellular vesicles during the endometrial window for embryo implantation	41
A major increase in oocyte cryopreservation cycles in the USA, Australia and New Zealand since 2010 is highlighted by younger women but a need for standardized data collection	41