Peter Zoltan Fedorcsak

• Mikkelsen, Thea Falkenberg; Vera-Rodriguez, Maria; Greggains, Gareth David; Fedorcsak, Peter Zoltan & Hald, Kirsten (2023). Effect of endometrial biopsy method on ribonucleic acid quality and gene expression analysis in patients with leiomyoma. F&S Reports. ISSN 2666-3341. doi: 10.1016/j.xfre.2023.11.006.
• Li, Yanjiao; Wang, Yunhao; Vera-Rodriguez, Maria; Lindeman, Leif Christopher; Skuggen, Linda Ellevog & Rasmussen, Erik Magne Koscielniak [Vis alle 21 forfattere av denne artikkelen] (2023). Single-cell m6A mapping in vivo using picoMeRIP–seq. Nature Biotechnology. ISSN 1087-0156. doi: 10.1038/s41587-023-01831-7. Fulltekst i vitenarkiv
• Kvernflaten, Birgit; Fedorcsak, Peter Zoltan & Solbrække, Kari Nyheim (2022). Kin or Research Material? Exploring IVF Couples’ Perceptions about the Human Embryo and Implications for Disposition Decisions in Norway. Journal of Bioethical Inquiry. ISSN 1176-7529. doi: 10.1007/s11673-022-10214-7. Vis sammendrag

  In vitro fertilization (IVF) involves making embryos outside of the human body, which has spurred debate about the status of the embryo, embryo research and donation. We explore couples’ perceptions about embryos and their thoughts and acceptability about various disposition decisions in Norway. Based on an ethnographic study including interviews and observations in an IVF clinic, we show that couples do not perceive their pre-implantation IVF embryos to be human lives; rather, they consider successful implantation the start of life. We suggest that this response indicates a change in the perception of the human embryo or the fertilised egg from incipient life—a viewpoint that was dominant in the discussions of embryo research in the 1980s and 1990s. We also show how this view of the pre-implantation embryo elucidates why donating embryos to research appears acceptable but donating to other infertile couples seems rather difficult. Before transfer to a woman’s uterus, the embryo exists in a liminality; it is not yet human life but a living cell with potential for both research and pregnancy. When an embryo is implanted and pregnancy is confirmed, human life activates; the embryo becomes potential kin, influencing couples’ struggles with donating embryos to other couples.

• Jørgensen, Hilde; Fedorcsak, Peter Zoltan; Isaacson, Keith; Tevonian, Erin; Xiao, Amy & Beste, Michael [Vis alle 9 forfattere av denne artikkelen] (2022). Endometrial cytokines in patients with and without endometriosis evaluated for infertility. Fertility and Sterility. ISSN 0015-0282. 117(3), s. 629–640. doi: 10.1016/j.fertnstert.2021.11.024. Fulltekst i vitenarkiv Vis sammendrag

  Objective To evaluate whether endometrial molecular profiles distinguish subsets of patients according to clinical characteristics, and to infer dysregulated immune networks, by measuring cytokines, chemokines, and growth factors in endometrial biopsy specimens from a cohort of infertile women with a high incidence of endometriosis. Design Prospective cohort study. Setting Department of Gynecology at a university hospital. Patient(s) Patients undergoing laparoscopy for infertility assessment (n = 103). Intervention(s) Endometrial biopsies were performed during surgery. Fertility outcome and clinical parameters were registered preoperatively and after 6 months. Main Outcome Measure(s) The concentrations of 48 factors in endometrial biopsy specimens were analyzed with respect to clinical status in univariate and multivariate frameworks.

• Kvernflaten, Birgit; Fedorcsak, Peter Zoltan & Solbrække, Kari Nyheim (2022). It’s all about kids, kids, kids! Negotiating reproductive citizenship and patient centered-care in ‘factory IVF’. BioSocieties. ISSN 1745-8552. doi: 10.1057/s41292-021-00268-y.
• Tanbo, Tom Gunnar & Fedorcsak, Peter Zoltan (2021). Can time to menopause be predicted? Acta Obstetricia et Gynecologica Scandinavica. ISSN 0001-6349. 100, s. 1961–1968. doi: 10.1111/aogs.14253. Fulltekst i vitenarkiv
• Schenck, Annejet; Vera-Rodriguez, Maria; Greggains, Gareth; Davidson, Ben & Fedorcsák, Péter (2020). Spatial and temporal changes in follicle distribution in the human ovarian cortex. Reproductive Biomedicine Online. ISSN 1472-6483. 42(2), s. 375–383. doi: 10.1016/j.rbmo.2020.10.013. Fulltekst i vitenarkiv
• Tanbo, Tom Gunnar; Mellembakken, Jan Roar; Bjercke, Sverre; Ring, Eva Kristina; Åbyholm, Thomas & Fedorcsák, Péter (2018). Ovulation induction in polycystic ovary syndrome. Acta Obstetricia et Gynecologica Scandinavica. ISSN 0001-6349. 97(10), s. 1162–1167. doi: 10.1111/aogs.13395. Fulltekst i vitenarkiv
• Pelanis, Rasa; Mellembakken, Jan Roar; Sundström-Poromaa, Inger; Berg, Pernille Ravn; Morin-Papunen, Laure & Tapanainen, Juha S. [Vis alle 12 forfattere av denne artikkelen] (2017). The prevalence of type 2 diabetes is not increased in normal-weight women with PCOS. Human Reproduction. ISSN 0268-1161. 32(11), s. 2279–2286. doi: 10.1093/humrep/dex294.
• Landfors, Miriam; Johansen, Jostein; Aronsen, Jan Magnus; Vågbø, Cathrine Broberg; Doré, Louis C. & He, Chuan [Vis alle 13 forfattere av denne artikkelen] (2017). Genome-wide profiling of DNA 5-hydroxymethylcytosine during rat Sertoli cell maturation. Cell Discovery. ISSN 2056-5968. 3. doi: 10.1038/celldisc.2017.13. Fulltekst i vitenarkiv
• Jørgensen, Hilde; Hill, Abby S.; Beste, Michael T.; Kumar, Manu P.; Chiswick, Evan & Fedorcsák, Péter [Vis alle 10 forfattere av denne artikkelen] (2017). Peritoneal fluid cytokines related to endometriosis in patients evaluated for infertility. Fertility and Sterility. ISSN 0015-0282. 107(5), s. 1191–1199.e2. doi: 10.1016/j.fertnstert.2017.03.013.
• Tanbo, Tom Gunnar & Fedorcsák, Péter (2017). Endometriosis-associated infertility: aspects of pathophysiological mechanisms and treatment options. Acta Obstetricia et Gynecologica Scandinavica. ISSN 0001-6349. 96(6), s. 659–667. doi: 10.1111/aogs.13082. Fulltekst i vitenarkiv
• Klungland, Arne; Dahl, John Arne; Greggains, Gareth; Fedorcsák, Péter & Filipczyk, Adam (2016). Reversible RNA modifications in meiosis and pluripotency. Nature Methods. ISSN 1548-7091. 14(1), s. 18–22. doi: 10.1038/nmeth.4111.
• Dahl, John Arne; Jung, Inkyung; Aanes, Håvard; Greggains, Gareth; Manaf, Adeel & Lerdrup, Mads [Vis alle 20 forfattere av denne artikkelen] (2016). Broad histone H3K4me3 domains in mouse oocytes modulate maternal-to-zygotic transition. Nature. ISSN 0028-0836. 537(7621), s. 548–552. doi: 10.1038/nature19360.
• Landfors, Miriam; Nakken, Sigve; Fusser, Markus; Dahl, John Arne; Klungland, Arne & Fedorcsák, Péter (2016). Sequencing of FTO and ALKBH5 in men undergoing infertility work-up identifies an infertility-associated variant and two missense mutations. Fertility and Sterility. ISSN 0015-0282. 105(5), s. 1170–1179e5. doi: 10.1016/j.fertnstert.2016.01.002.
• Tanbo, Tom Gunnar; Greggains, Gareth; Storeng, Eleftheria (Ritsa) T.; Busund, Bjørn; Langebrekke, Anton & Fedorcsák, Péter (2015). Autotransplantation of cryopreserved ovarian tissue after treatment for malignant disease - The first Norwegian results. Acta Obstetricia et Gynecologica Scandinavica. ISSN 0001-6349. 94(9), s. 937–941. doi: 10.1111/aogs.12700.
• Stensen, Mette Haug; Tanbo, Tom Gunnar; Storeng, Eleftheria (Ritsa) T.; Åbyholm, Thomas & Fedorcsak, Peter (2015). Fragmentation of human cleavage-stage embryos is related to the progression through meiotic and mitotic cell cycles. Fertility and Sterility. ISSN 0015-0282. 103(2), s. 374–381.e4. doi: 10.1016/j.fertnstert.2014.10.031.
• Nilsen, Anja; Fusser, Markus; Greggains, Gareth; Fedorcsak, Peter & Klungland, Arne (2014). ALKBH4 depletion in mice leads to spermatogenic defects. PLOS ONE. ISSN 1932-6203. 9(8). doi: 10.1371/journal.pone.0105113.
• Haavaldsen, Camilla; Fedorcsak, Peter; Tanbo, Tom Gunnar & Eskild, Anne (2014). Maternal age and serum concentration of human chorionic gonadotropin in early pregnancy. Acta Obstetricia et Gynecologica Scandinavica. ISSN 0001-6349. 93(12), s. 1290–1294. doi: 10.1111/aogs.12471.
• Wilkosz, Pawel; Greggains, Gareth; Tanbo, Tom Gunnar & Fedorcsak, Peter (2014). Female reproductive decline is determined by remaining ovarian reserve and age. PLOS ONE. ISSN 1932-6203. 9(10). doi: 10.1371/journal.pone.0108343.
• Polec, Anna; Fedorcsak, Peter; Eskild, Anne & Tanbo, Tom Gunnar (2014). The interplay of human chorionic gonadotropin (hCG) with basic fibroblast growth factor and adipokines on angiogenesis in vitro. Placenta. ISSN 0143-4004. 35(4), s. 249–253. doi: 10.1016/j.placenta.2014.02.002.
• Stensen, Mette Haug; Tanbo, Tom Gunnar; Storeng, Eleftheria (Ritsa) T. & Fedorcsak, Peter (2014). Advanced glycation end products and their receptor contribute to ovarian ageing. Human Reproduction. ISSN 0268-1161. 29(1), s. 125–134. doi: 10.1093/humrep/det419.
• Opøien, Hans Kristian; Fedorcsak, Peter; Polec, Anna; Stensen, Mette Haug; Åbyholm, Thomas & Tanbo, Tom Gunnar (2013). Do endometriomas induce an inflammatory reaction in nearby follicles? Human Reproduction. ISSN 0268-1161. 28(7), s. 1837–1845. doi: 10.1093/humrep/det087.
• Zheng, Guanqun; Dahl, John Arne; Niu, Yamei; Fedorcsak, Peter; Huang, Chun-Min & Li, Charles J. [Vis alle 28 forfattere av denne artikkelen] (2013). ALKBH5 Is a Mammalian RNA Demethylase that Impacts RNA Metabolism and Mouse Fertility. Molecular Cell. ISSN 1097-2765. 49(1), s. 18–29. doi: 10.1016/j.molcel.2012.10.015.
• Eskild, Anne; Fedorcsak, Peter; Mørkrid, Lars & Tanbo, Tom Gunnar (2012). Maternal body mass index and serum concentrations of human chorionic gonadotropin in very early pregnancy. Fertility and Sterility. ISSN 0015-0282. 98(4), s. 905–910. doi: 10.1016/j.fertnstert.2012.06.011.
• Opøien, Hans Kristian; Fedorcsak, Peter; Omland, Anne Katerine; Åbyholm, Thomas; Bjercke, Sverre & Ertzeid, Gudvor [Vis alle 9 forfattere av denne artikkelen] (2012). In vitro fertilization is a successful treatment in endometriosis-associated infertility. Fertility and Sterility. ISSN 0015-0282. 97(4), s. 912–918. doi: 10.1016/j.fertnstert.2012.01.112.
• Opøien, Hans Kristian; Fedorcsak, Peter; Åbyholm, Thomas & Tanbo, Tom Gunnar (2011). Complete surgical removal of minimal and mild endometriosis improves outcome of subsequent IVF/ICSI treatment. Reproductive Biomedicine Online. ISSN 1472-6483. 23(3), s. 389–395. doi: 10.1016/j.rbmo.2011.06.002.
• Polec, Anna; Raki, Melinda; Åbyholm, Thomas; Tanbo, Tom Gunnar & Fedorcsak, Peter (2011). Interaction between granulosa-lutein cells and monocytes regulates secretion of angiogenic factors in vitro. Human Reproduction. ISSN 0268-1161. 26(10), s. 2819–2829. doi: 10.1093/humrep/der216.
• Mellembakken, Jan Roar; Berga, Sarah L.; Kilen, Mirjam; Tanbo, Tom Gunnar; Åbyholm, Thomas & Fedorcsak, Peter (2011). Sustained fertility from 22 to 41 years of age in women with polycystic ovarian syndrome. Human Reproduction. ISSN 0268-1161. 26(9), s. 2499–2504. doi: 10.1093/humrep/der214.
• Stensen, Mette Haug; Tanbo, Tom Gunnar; Storeng, Eleftheria (Ritsa) T.; Åbyholm, Thomas & Fedorcsak, Peter (2010). Routine morphological scoring systems in assisted reproduction treatment fail to reflect age-related impairment of oocyte and embryo quality. Reproductive Biomedicine Online. ISSN 1472-6483. 21(1), s. 118–125. doi: 10.1016/j.rbmo.2010.03.018.
• Bjercke, Sverre; Tanbo, Tom Gunnar; Åbyholm, Thomas; Omland, Anne Katerine; Opøien, Hans Kristian & Fedorcsak, Peter (2010). Clinical outcome following stimulation with highly purified hMG or recombinant FSH in patients undergoing their first treatment cycle of IVF or ICSI. Acta Obstetricia et Gynecologica Scandinavica. ISSN 0001-6349. 89(8), s. 1053–1060. doi: 10.3109/00016349.2010.499450.
• Fedorcsak, Peter; Polec, Anna; Raki, Melinda; Holm, Ruth; Jebsen, Peter Wilhelm & Åbyholm, Thomas (2010). Differential Release of Matrix Metalloproteinases and Tissue Inhibitors of Metalloproteinases by Human Granulosa-Lutein Cells and Ovarian Leukocytes. Endocrinology. ISSN 0013-7227. 151(3), s. 1290–1298. doi: 10.1210/en.2009-0605.
• Polec, Anna; Tanbo, Tom Gunnar & Fedorcsak, Peter (2009). Cellular Interaction Regulates Interleukin-8 Secretion by Granulosa-Lutein Cells and Monocytes/Macrophages. American Journal of Reproductive Immunology. ISSN 8755-8920. 61(1), s. 85–94. doi: 10.1111/j.1600-0897.2008.00668.x.
• Omland, Anne Katerine; Bjercke, Sverre; Ertzeid, Gudvor; Fedorcsak, Peter; Oldereid, Nan Birgitte & Storeng, Ritsa [Vis alle 8 forfattere av denne artikkelen] (2006). Intracytoplasmic sperm injection (ICSI) in unexplained and stage I endometriosis-associated infertility after fertilization failure with in vitro fertilization (IVF). Journal of Assisted Reproduction and Genetics. ISSN 1058-0468. 7(8), s. 351–356.
• Ertzeid, Gudvor; Fedorcsak, Peter; Åbyholm, Thomas & Tanbo, Tom Gunnar (2006). Elective single embryo transfer in assisted reproduction. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 126(23), s. 3101–3102.
• Lund, Hanne S.; Alstad, Heidi; Fedorcsak, Peter; Storeng, Rita & Hemmersbach, Peter J (2005). Endogenous nandrolone production: studies in granulosa cells from patients with polycystic ovary syndrom (PCOS). I Schänzer, Wilhelm; Geyer, Hans; Gotzmann, Andrea & Mareck, Ute (Red.), Recent Advances in Doping Analysis (13). Sportverlag Strauss. ISSN 3-939390-13-5. s. 483–486.
• Omland, Anne Katerine; Åbyholm, Thomas; Fedorcsak, Peter; Ertzeid, Gudvor; Oldereid, Nan Birgitte & Bjercke, Sverre [Vis alle 7 forfattere av denne artikkelen] (2005). Pregnancy outcome after IVF and ICSI in unexplained, endometriosis-associated and tubal factor infertility. Human Reproduction. ISSN 0268-1161. 20(3), s. 722–727. Vis sammendrag

  This study was undertaken in order to compare pregnancy outcome after IVF and ICSI in unexplained and endometriosis-associated infertility using tubal factor infertility as controls. METHODS: This was a retrospective cohort study of early IVF/ICSI pregnancies verified by serum hCG measurement, comparing the subsequent outcome in unexplained (n = 274) and minimal endometriosis-associated (n = 212) with tubal factor (n = 540) infertility as controls. From January 1990 to December 2002, 1026 conception cycles after treatment with IVF or ICSI complied with the inclusion criteria. RESULTS: Live birth rate, twin birth rate after transfer of two embryos and abortion rate prior to 6 weeks of gestation were superior for the unexplained (78.8, 23.5 and 11.7%) compared to endometriosis-associated (66.0, 15.0 and 19.3%) and tubal factor (66.7, 18.1 and 18.0%) infertility groups (P < 0.05). Compared to the endometriosis-associated, the unexplained infertility group attained a higher pregnancy rate after the first treatment cycle (P < 0.05). CONCLUSIONS: The overall better outcome for the unexplained infertility group with respect to live birth rate, twin birth rate and early abortion rate compared to the minimal peritoneal endometriosis-associated and tubal factor infertility groups might be a guide to select diagnostic groups for single embryo transfer and be useful in patient counselling

• Bjercke, Sverre; Fedorcsak, Peter; Åbyholm, Thomas; Storeng, Ritsa; Ertzeid, Gudvor & Oldereid, Nan Birgitte [Vis alle 8 forfattere av denne artikkelen] (2005). IVF/ICSI outcome and serum LH concentration on day 1 of ovarian stimulation with recombinant FSH under pituitary suppression. Human Reproduction. ISSN 0268-1161. 20.
• Fedorcsak, Peter; Dale, Per Olav; Storeng, Ritsa; Ertzeid, Gudvor; Bjercke, Sverre & Oldereid, Nan [Vis alle 9 forfattere av denne artikkelen] (2004). Impact of overweight and underweight on assisted reproduction treatment. Human Reproduction. ISSN 0268-1161. 19(11), s. 2523–2528.
• Dale, P.O.; Tanbo, T; Ertzeid, Gudvor; Bjercke, S; Oldereid, N.B. & Fedorcsak, Peter [Vis alle 7 forfattere av denne artikkelen] (2004). The impact of insulin resistance on the outcome of laparoscopic ovarian electrocautery in infertile women with the polycystic ovary syndrome. Gynecological Endocrinology. ISSN 0951-3590. 19, s. 182–189.
• Fedorcsak, Peter & Åbyholm, Thomas (2003). The effect of metformin on ovarian stimulation and in vitro fertilization in insulin resistant women with polycystic ovarian syndrome: an open randomized crossover trial. Gynecological Endocrinology. ISSN 0951-3590. 17, s. 207–214.
• Fedorcsak, Peter (2003). Effects of leptin and leukemia inhibitory factor on preimplantation development and STAT3 signaling of mouse embryos in vitro. Biology of Reproduction. ISSN 0006-3363. 69, s. 1531–1538.
• Omland, Anne Katerine; Fedorcsak, Peter; Storeng, Ritsa; Dale, Per Olav; Åbyholm, Thomas & Tanbo, Tom [Vis alle 7 forfattere av denne artikkelen] (2002). Different aetiological mechanisms for unexplained and endometriosis-associated infertility cannot be inferred from unstimulated IVF cycles using HCG to induce ovulation. Human Reproduction. ISSN 0268-1161. 17, s. 1927–1927.
• Omland, Anne Katerine; Fedorcsak, Peter; Storeng, Ritsa; Dale, Per Olav; Åbyholm, Thomas & Tanbo, Tom (2001). Natural cycle IVF in unexplained, endometriosis-associated and tubal factor infertility. Human Reproduction. ISSN 0268-1161. 16(12), s. 2587–2592.
• Fedorcsak, Peter; Dale, Per Olav; Storeng, Ritsa; Tanbo, Tom & Åbyholm, Thomas (2001). The impact of obesity and insulin resistance on the outcome of IVF or ICSI in women with polycystic ovarian syndrome. Human Reproduction. ISSN 0268-1161. 16, s. 1086–1091.
• Wang, Y H.; Fedorcsak, Peter; Dale, Per Olav; Storeng, Ritsa; Åbyholm, Thomas & Tanbo, Tom (2001). Simplification of continous infusion of glucose with model assessment in the evaluation of insulin resistance in PCOS women. Gynecological Endocrinology. ISSN 0951-3590. 15, s. 192–197.
• Fedorcsak, Peter; Storeng, Ritsa; Dale, Per Olav; Tanbo, Tom & Åbyholm, Thomas (2000). Obesity is associated with early pregnancy loss after IVF or ICSI. Acta Obstetricia et Gynecologica Scandinavica. ISSN 0001-6349. 1, s. 43–48.
• Fedorcsak, Peter; Storeng, Ritsa; Dale, Per Olav; Tanbo, Tom & Åbyholm, Thomas (2000). Impaired insulin action on granulosa-lutein cells from patients with polycystic ovary syndrome and insulin resistance. Gynecological Endocrinology. ISSN 0951-3590. 14, s. 327–336.

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• Tiller, Heidi; Fedorcsák, Péter & Skogen, Bjørn Ragnar (2016). Old tools revisited give hope - new treatment option for families with a history of severe FNAIT complications. . Acta Obstetricia et Gynecologica Scandinavica. ISSN 0001-6349. 95(4), s. 486–487. doi: 10.1111/aogs.12842. Fulltekst i vitenarkiv
• Haavaldsen, Camilla; Fedorcsák, Péter; Tanbo, Tom Gunnar & Eskild, Anne (2015). Reply to Bang Hyun Lee et al.: Maternal age and human chorionic gonadotropin in early pregnancy: Influence of gonadotropin-releasing hormone. Acta Obstetricia et Gynecologica Scandinavica. ISSN 0001-6349. 94(4). doi: 10.1111/aogs.12583.
• Polec, Anna; Raki, Melinda; Tanbo, Tom Gunnar; Åbyholm, Thomas & Fedorcsak, Peter (2011). Interaction between Granulosa-Lutein Cells and Monocytes Regulates Secretion of Angiogenic Factors In Vitro. Reproductive Sciences. ISSN 1933-7191. 18(3), s. 279A–279A.
• Stensen, Mette Haug; Tanbo, Tom Gunnar; Storeng, R.; Abyholm, T. & Fedorcsak, Peter (2011). Human ovarian ageing: a role of advanced glycation endproducts (AGE) and the receptor RAGE? Human Reproduction. ISSN 0268-1161. 26, s. I235–I236.
• Mellembakken, Jan Roar; Berga, Sarah L.; Kilen, Mirjam; Tanbo, Tom Gunnar; Abyholm, Thomas & Fedorcsak, Peter (2011). Unchanged Fertility with Age in Women with Polycystic Ovarian Syndrome. Reproductive Sciences. ISSN 1933-7191. 18(3), s. 253A–253A.
• Polec, Anna; Raki, Melinda; Tanbo, Tom Gunnar; Abyholm, Thomas & Fedorcsak, Peter (2010). Interaction between granulosa-lutein cells and monocytes regulates secretion of angiogenic factors in vitro. Human Reproduction. ISSN 0268-1161. 25, s. I287–I288.
• Opøien, Hans Kristian; Fedorcsak, Peter; Åbyholm, Thomas; Tanbo, Tom Gunnar & Tanbo, Tom (2010). Complete surgical removal of minimal and mild endometriosis improves outcome of subsequent assisted reproduction treatment. Human Reproduction. ISSN 0268-1161. 25(Supp. 1), s. I10–I10.
• Alstad, Heidi; Lund, Hanne S.; Fedorcsak, Peter; Storeng, Rita & Hemmersbach, Peter J (2005). Endogenous nandrolone production: Studies in granulosa cells from patients with polycystic ovary syndrome (PCOS).
• Fedorcsak, Peter (2003). Phosphorylation of STAT 3 protein in trophectoderm and inner cell mass cells of mouse blastocysts in vitro.
• Jåthun, Solveig; Lund, H.; Fedorcsak, Peter; Storeng, Ritsa; Torjesen, Peter A. & Hemmersbach, Peter J (2002). Synthesis of Nandrolone in the human ovary.
• Storeng, Ritsa; Fedorcsak, Peter; Bjerknes, G.; Frøland, E.; Haug, M. & Grøthe, A. G. [Vis alle 10 forfattere av denne artikkelen] (2002). Comparison of ICSI outcome in male and non-male factor infertility.
• Jåthun, Solveig; Fedorcsak, Peter; Storeng, Ritsa; Lund, H.; Hemmersbach, Peter J & Torjesen, Peter A. (2002). Nandrolone (19-nortestosterone) is a by-product of the estrogen aromatase of the human ovary.
• Fedorcsak, Peter & Storeng, Ritsa (2002). Leukemia inhibitory factor (LIF) neutralizes the inhibitory effect of leptin on the preimplantation development of mouse embryos in vitro.
• Fedorcsak, Peter & Storeng, Ritsa (2002). Fat hormone leptin impairs embryo development in mice.
• Fedorcsak, Peter; Storeng, Ritsa; Dale, Per Olav; Tanbo, Tom; Torjesen, Peter A. & Åbyholm, Thomas (2000). Leptin and leptin binding activity in the preovulatory follicle of polycystic ovary syndrome.

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