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Rafaella Sales de Freitas Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil

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Thiago F A França Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil

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Sabine Pompeia Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil

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Introduction Adolescence is a period of life marked by an interconnected set of social, cognitive, psycho-emotional, and morphophysiological changes ( 1 ). The morphophysiological aspects of adolescent development are related to puberty, which

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Xiuhua Liao Center of Reproductive Medicine, Fujian Maternity and Child Health Hospital, College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, China
Fujian Maternal-Fetal Clinical Medicine Research Center, Fuzhou, China
Fujian Key Laboratory of Prenatal Diagnosis and Birth Defect, Fuzhou, China

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Suqin Zhu Center of Reproductive Medicine, Fujian Maternity and Child Health Hospital, College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, China

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Shumin Qiu Center of Reproductive Medicine, Fujian Maternity and Child Health Hospital, College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, China

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Hua Cao Center of Reproductive Medicine, Fujian Maternity and Child Health Hospital, College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, China

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Wenwen Jiang Center of Reproductive Medicine, Fujian Maternity and Child Health Hospital, College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, China

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Huiling Xu Center of Reproductive Medicine, Fujian Maternity and Child Health Hospital, College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, China

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Yan Sun Center of Reproductive Medicine, Fujian Maternity and Child Health Hospital, College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, China

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Beihong Zheng Center of Reproductive Medicine, Fujian Maternity and Child Health Hospital, College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fuzhou, China
Fujian Maternal-Fetal Clinical Medicine Research Center, Fuzhou, China
Fujian Key Laboratory of Prenatal Diagnosis and Birth Defect, Fuzhou, China

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, including abnormal follicular development, insulin resistance, and excess androgen production ( 2 ). Among these changes, abnormal follicular development and insulin resistance are more commonly observed. However, the pathogenesis and molecular regulatory

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Sophie van Rijn Clinical Neurodevelopmental Sciences, Leiden University, Wassenaarseweg, Leiden, The Netherlands
TRIXY Center of Expertise, Leiden University Treatment and Expertise Centre (LUBEC), Sandifortdreef, Leiden, The Netherlands
Leiden Institute for Brain and Cognition, Leiden University, Wassenaarseweg, Leiden, The Netherlands

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Kimberly Kuiper Clinical Neurodevelopmental Sciences, Leiden University, Wassenaarseweg, Leiden, The Netherlands
TRIXY Center of Expertise, Leiden University Treatment and Expertise Centre (LUBEC), Sandifortdreef, Leiden, The Netherlands
Leiden Institute for Brain and Cognition, Leiden University, Wassenaarseweg, Leiden, The Netherlands

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Nienke Bouw Clinical Neurodevelopmental Sciences, Leiden University, Wassenaarseweg, Leiden, The Netherlands
TRIXY Center of Expertise, Leiden University Treatment and Expertise Centre (LUBEC), Sandifortdreef, Leiden, The Netherlands
Department of Child and Adolescent Psychiatry/Psychology, Erasmus MC, Sophia Children’s Hospital, Dr. Molewaterplein, Rotterdam, The Netherlands

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Evelien Urbanus Clinical Neurodevelopmental Sciences, Leiden University, Wassenaarseweg, Leiden, The Netherlands
TRIXY Center of Expertise, Leiden University Treatment and Expertise Centre (LUBEC), Sandifortdreef, Leiden, The Netherlands
Department of Clinical, Neuro, and Developmental Psychology, Vrije Universiteit Amsterdam, Van der Boechorststraat, Amsterdam, The Netherlands

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Hanna Swaab Clinical Neurodevelopmental Sciences, Leiden University, Wassenaarseweg, Leiden, The Netherlands
TRIXY Center of Expertise, Leiden University Treatment and Expertise Centre (LUBEC), Sandifortdreef, Leiden, The Netherlands
Leiden Institute for Brain and Cognition, Leiden University, Wassenaarseweg, Leiden, The Netherlands

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. Neurocognitive impairments may serve as sensitive early predictors of behavioral problems in later life, may function as markers for children with an ‘at-risk’ development (e.g. identify those that do not meet age-specific norms for language, cognitive, and motor

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Brendan J Nolan Department of Endocrinology, Austin Health, Heidelberg, Victoria, Australia
Department of Medicine (Austin Health), University of Melbourne, Heidelberg, Victoria, Australia

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Aviva S Frydman Department of Endocrinology, Austin Health, Heidelberg, Victoria, Australia

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Shalem Y Leemaqz College of Medicine and Public Health, Flinders University, Adelaide, South Australia, Australia

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Meg Carroll Department of Medicine (Austin Health), University of Melbourne, Heidelberg, Victoria, Australia

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Mathis Grossmann Department of Endocrinology, Austin Health, Heidelberg, Victoria, Australia
Department of Medicine (Austin Health), University of Melbourne, Heidelberg, Victoria, Australia

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Jeffrey D Zajac Department of Endocrinology, Austin Health, Heidelberg, Victoria, Australia
Department of Medicine (Austin Health), University of Melbourne, Heidelberg, Victoria, Australia

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Ada S Cheung Department of Endocrinology, Austin Health, Heidelberg, Victoria, Australia
Department of Medicine (Austin Health), University of Melbourne, Heidelberg, Victoria, Australia

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development of physical characteristics that align with their gender identity and improves mental health ( 1 ). There has been an ongoing debate regarding the inclusion of progesterone in feminising hormone therapy regimens. Some suggest progesterone may aid

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Claus H Gravholt Department of Endocrinology, Aarhus University Hospital, Aarhus, Denmark
Department of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark
Department of Clinical Medicine, Aarhus University, Aarhus, Denmark

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Alberto Ferlin Department of Medicine, Unit of Andrology and Reproductive Medicine, University of Padova, Padova, Italy

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Joerg Gromoll Centre of Reproductive Medicine and Andrology, Münster, Germany

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Anders Juul Department of Growth and Reproduction Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
Department of Clinical Medicine, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark

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Armin Raznahan Section on Developmental Neurogenomics, National Institute of Mental Health Intramural Research Program, National Institutes of Health, Bethesda, Maryland, USA

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Sophie van Rijn Clinical Neurodevelopmental Sciences, Leiden University, Leiden, The Netherlands and TRIXY Center of Expertise, Leiden University Treatment and Expertise Centre (LUBEC), Leiden, The Netherlands

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Alan D Rogol Department of Pediatrics, University of Virginia, Charlottesville, Virginia, USA

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Anne Skakkebæk Department of Molecular Medicine, Aarhus University Hospital, Aarhus, Denmark
Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
Department of Clinical Genetics, Aarhus University Hospital, Aarhus, Denmark

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Nicole Tartaglia Department of Pediatrics, Developmental Pediatrics, University of Colorado School of Medicine, Aurora, Colorado, USA

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Hanna Swaab Clinical Neurodevelopmental Sciences, Leiden University, Leiden, The Netherlands and TRIXY Center of Expertise, Leiden University Treatment and Expertise Centre (LUBEC), Leiden, The Netherlands

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2016 in Münster, Germany ( 2 ). It was organized by Prof Hanna Swaab and her local organizing team at the University of Leiden, as well as an international scientific organizing team. Over 3 days, participants presented the latest developments within

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Yufen Zhao College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, PR China
Key Laboratory of Animal Embryo and Development Engineering of Autonomous Region Universities, Inner Mongolia Agricultural University, Hohhot, PR China

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Erge Namei College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, PR China
Key Laboratory of Animal Embryo and Development Engineering of Autonomous Region Universities, Inner Mongolia Agricultural University, Hohhot, PR China

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Bingxue Yang College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, PR China
Key Laboratory of Animal Embryo and Development Engineering of Autonomous Region Universities, Inner Mongolia Agricultural University, Hohhot, PR China

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Xiangnan Bao Inner Mongolia Saikexing Institute of Breeding and Reproductive Biotechnology in Domestic Animal, Hohhot, PR China
National Center of Technology Innovation for Dairy Industry, Hohhot, PR China

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Wei Sun Inner Mongolia Saikexing Institute of Breeding and Reproductive Biotechnology in Domestic Animal, Hohhot, PR China

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Gerile Subudeng College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, PR China
Key Laboratory of Animal Embryo and Development Engineering of Autonomous Region Universities, Inner Mongolia Agricultural University, Hohhot, PR China

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Guifang Cao College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, PR China
Key Laboratory of Animal Embryo and Development Engineering of Autonomous Region Universities, Inner Mongolia Agricultural University, Hohhot, PR China

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Haijun Li College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, PR China
Key Laboratory of Animal Embryo and Development Engineering of Autonomous Region Universities, Inner Mongolia Agricultural University, Hohhot, PR China

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Gui Wang Animal Genetic Breeding and Reproduction Research Center, Hetao College, Bayannur, PR China

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follicular somatic cells or somatic cells and oocytes mediate complex message exchange between cells and are necessary for granulosa cell proliferation, differentiation, and oocyte growth and maturation during follicular development ( 3 , 4 , 5 ). In

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Nathalie Ly Department of Endocrinology and Reproductive Medicine, Reference Center for Rare Endocrine Diseases of Growth and Development, Reference Center for Gynecological Rare Diseases, Hôpitaux Universitaires Pitié Salpêtrière-Charles Foix, Paris, France
EndoERN, APHP Consortium Pitie Salpetriere Hospital, Necker Hospital, Paris, France

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Sophie Dubreuil Department of Endocrinology and Reproductive Medicine, Reference Center for Rare Endocrine Diseases of Growth and Development, Reference Center for Gynecological Rare Diseases, Hôpitaux Universitaires Pitié Salpêtrière-Charles Foix, Paris, France
EndoERN, APHP Consortium Pitie Salpetriere Hospital, Necker Hospital, Paris, France

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Philippe Touraine Department of Endocrinology and Reproductive Medicine, Reference Center for Rare Endocrine Diseases of Growth and Development, Reference Center for Gynecological Rare Diseases, Hôpitaux Universitaires Pitié Salpêtrière-Charles Foix, Paris, France
EndoERN, APHP Consortium Pitie Salpetriere Hospital, Necker Hospital, Paris, France
Sorbonne University, Paris, France

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Objective

Growth hormone (GH) and insulin-like growth factors (IGFs) are not mandatory for reproductive life, but data suggest their synergistic action with follicle-stimulating hormone throughout ovarian folliculogenesis. We aimed to evaluate the association of IGF-1 level on clinical pregnancy rate after ovarian stimulation, with or without intrauterine insemination, in women with GH deficiency (GHD) treated with GH replacement therapy (GHRT) at conception.

Design and methods

Data from 19 women with both GHD and hypogonadotropic hypogonadism referred to our reproductive medicine department were retrospectively collected. IGF-1 levels were assessed in a single laboratory, and values were expressed in s.d. from the mean.

Results

Amongst the seven patients receiving GHRT during ovarian stimulation, higher IGF-1 levels were significantly associated with clinical pregnancy (+0.4 s.d. vs–1.6 s.d., P = 0.03). Amongst the 24 pregnancies obtained by the 19 infertile patients, pregnancy loss was less frequent with the addition of GHRT than without (1 miscarriage out of 8 total pregnancies vs 4 miscarriages out of 16 total pregnancies).

Conclusions

This is the first study evaluating the association of IGF-1 level on clinical pregnancy rate in GH-treated women at conception. When taking care of female infertility due to hypogonadotropic hypogonadism, practitioners should enquire about the associated GHD and IGF-1 levels. To ensure higher clinical pregnancy chances, practitioners should aim for IGF-1 values at conception, ranging from 0 s.d. to +2 s.d., and, if necessary, could discuss initiation or increase GH treatment. Prospective studies should help strengthen our results.

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Silvia Ciancia Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium

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Vanessa Dubois Basic and Translational Endocrinology (BaTE), Department of Basic and Applied Medical Sciences, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium

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Martine Cools Department of Internal Medicine and Pediatrics, Ghent University, Pediatric Endocrinology Service, Ghent University Hospital, Ghent, Belgium

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adolescents to explore their gender identity, start a social transition, and live in the social role of the experienced gender. At the same time, the development of secondary sex characteristics is halted. Thus, many TGD adolescents who will seek further

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Hong Tang Departments of Gynaecology and Obstetrics Seventh People’s Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China

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Xiaomei Jiang Departments of Gynaecology and Obstetrics Seventh People’s Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China

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Yu Hua Departments of Gynaecology and Obstetrics Seventh People’s Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China

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Heyue Li Departments of Gynaecology and Obstetrics Seventh People’s Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China

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Chunlan Zhu Departments of Gynaecology and Obstetrics Seventh People’s Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China

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Xiaobai Hao Departments of Gynaecology and Obstetrics Seventh People’s Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China

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Minhui Yi Departments of Gynaecology and Obstetrics Seventh People’s Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China

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Linxia Li Departments of Gynaecology and Obstetrics Seventh People’s Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai, China

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triggered by the imbalance between the antioxidant system and oxidative stress ( 12 , 14 ). There are two major pathways that contribute to the development of ferroptosis: the enzyme-regulated pathway and transporter-dependent pathway. The enzyme

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R H M Dykgraaf Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands

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S Schalekamp-Timmermans Division of Obstetrics and Fetal Medicine, Department of Obstetrics and Gynecology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands

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M C Adank Division of Obstetrics and Fetal Medicine, Department of Obstetrics and Gynecology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands

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S A A van den Berg Department of Clinical Chemistry, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
Department of Internal Medicine, Academic Center for Thyroid Diseases, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands

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B M N van de Lang-Born Department of Clinical Chemistry, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
Department of Internal Medicine, Academic Center for Thyroid Diseases, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands

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T I M Korevaar Department of Internal Medicine, Academic Center for Thyroid Diseases, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands

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A Kumar Ansh Labs, Webster, Texas, USA

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B Kalra Ansh Labs, Webster, Texas, USA

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G V Savjani Ansh Labs, Webster, Texas, USA

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E A P Steegers Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
Division of Obstetrics and Fetal Medicine, Department of Obstetrics and Gynecology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands

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Y V Louwers Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands

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J S E Laven Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands

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the GnRH pulse generator during pregnancy and contributes in that way to the decrease in pituitary gonadotrophins causing a decrease in AMH. Fetal growth is dependent on adequate development of the placenta ( 52 ). Korevaar et al. showed that a

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