OOIR: Observatory of International Research

Papers

(The H4-Index of Human Reproduction is 40. 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 2021-05-01 to 2025-05-01.)

Article	Citations
P–779 Vascular stiffness in children born after embryo transfer at 8–9 years of age	176
O-162 Metabolic syndrome prevalence and severity during a randomized controlled three-component lifestyle intervention in women with PCOS	128
P–774 Clinical effectiveness of elective single versus double blastocyst transfer in women aged 36 years or older	105
P–789 Obstetric and perinatal outcomes in poor ovarian responders and normal responders flowing fresh embryo transfer: a prospective, monocentric, observational study	98
P–360 Blastocyst biopsy day does have an impact on clinical pregnancies in different frozen embryo transfer (FET) regimens: natural cycle (NC) versus hormone replacement therapy (HRT)	85
Applying a simplified economic evaluation approach to evaluate infertility treatments in clinical practice	78
Fertility treatment with clomiphene citrate and childhood epilepsy: a nationwide cohort study	77
Reply: The utilization of accurate body mass index classification is imperative for grouping based on BMI	75
Insights into ovarian response with a fixed low dose FSH stimulation in an IUI programme: the PRORAILS study	72
P–442 Cancer does not adversely affect oocyte maturation in vitro with the exception of breast cancer	71
P–342 Are blastulation and clinical pregnancy rates in women with endometriomas different than those without?	68
P–201 The beneficial effects of ZP-free culture on cytoplasmic fragmentation in human embryos. : An innovative trial using 3PN zygotes	65
P–128 Audit of testicular sperm in assisted conception for non-azoospermic infertile couples	65
P–035 Mathematical model of the signaling cascade during mouse sperm capacitation	64
P–456 Impact of first-line chemotherapy prior to ovarian tissue cryopreservation on primordial follicle activation and survival in pre-pubertal and young adult patients	64
P–314 Serum Stem Cell Factor as a predictor of top quality blasotcysts formation in women with endometriosis	61
O-133 Association between normal-range paternal serum free thyroxine concentrations and outcomes of assisted reproductive technologies	59
P-641 Physicians’ practices towards hormone monitoring during ovarian stimulation in context of treatment with Assisted Reproductive Technology (ART). A global Survey conducted through IVFworldwide.co	59
P-496 “The plethora of information can be overwhelming…”: A mixed methods study exploring the sources of fertility information	56
P-508 Why I left my Fertility Clinic for Another ART provider – It’s Not What You Think: A RealTalk patient survey	55
O-112 Fertility awareness: Educating the teenagers in europe	54
O-080 Impact of age-limit policy change for assisted reproductive technology (ART) subsidy in Japan	54
P-620 Hormone replacement therapy with GnRH agonist pretreatment improves pregnancy outcomes in patients with previous intrauterine adhesions	53
O-021 Levothyroxine in Euthyroid Thyroid Peroxidase Antibody positive Women with Recurrent Pregnancy Loss: a multicentre, randomised, double-blind trial (T4LIFE trial)	53
P-135 Clinical outcomes depending on post-warming culture duration of vitrified-warmed single blastocyst transfer cycles	52

P-572 Hormonal Monitoring and Progesterone Adjustment in Frozen Embryo Transfer Cycles	50
P-645 Intra-ovarian injection of autologous platelet-rich plasma (PRP) in poor prognosis IVF patients within 1 year of treatment: a cohort study	50
P-690 Time to bust some myths about progesterone supplementation in the luteal phase. Role of the route of administration and usefulness (or uselessness) of plasma determination	49
P–501 Deep in the Maze: The psychosocial trajectory and decision making of Women with recurrent implantation failure of IVF	48
P–004 Effect of varicocelectomy on sperm DNA fragmentation rates in infertile men with clinical varicocele: a systematic review and meta-analysis	47
P–498 Patient’s pregnancy rates after IVF fresh embryo transfer positively correlates to the number of visual connections to live blastocyst development images of own embryos	44
O-104 Low SARS-CoV-2 positivity rate in women included in ART programs following the recommendations of the Spanish scientific societies on reproduction (SEF/ASEBIR)	44
O-217 Bitter Taste Receptors expression in human follicular cells: new perspectives in female fertility	43
P–338 Epigenetic alterations in H19-DMR regulatory region in endometrial tissues of women with endometriosis	43
O-029	42
O-209 Separating spermatozoa from debris, non-germ and red blood cells during differential centrifugation as a new effective approach of sperm recovery from surgically-retrieved specimens	41
P-283 RCT Comparing day 3 - fresh embryo transfer cycles with freeze all cycles in IVF-ICSI cycles	41
O-053 Link between cannabis use and fertility: effects on gamete competence and early embryonic development	41
O-157 Female body mass index (BMI) influences pregnancy outcomes: An evaluation of 4349 IVF/ICSI cycles	40
P-431 Functionally active microbiota in the receptive-phase endometria in women with recurrent implantation failure	40
P-683 High Serum Progesterone Levels on Day of Embryo Transfer for Pregnancy Outcomes in Patients Undergoing Artificial Frozen-thawed Blastocyst Transfer; Is There a Ceiling Effect?	40