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Mette Bøgehave Department of Clinical Biochemistry, Hospital South West Jutland, University Hospital of Southern Denmark, Esbjerg, Denmark
Unit for Thrombosis Research, Department of Regional Health Research, University of Southern Denmark, Denmark

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Dorte Glintborg Department of Endocrinology, Odense University Hospital, Odense, Denmark
Department of Clinical Research, University of Southern Denmark, Odense, Denmark
OPEN, Open Patient data Explorative Network, Odense University Hospital, Region of Southern Denmark, Odense, Denmark

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Jørgen Brodersen Gram Department of Clinical Biochemistry, Hospital South West Jutland, University Hospital of Southern Denmark, Esbjerg, Denmark
Unit for Thrombosis Research, Department of Regional Health Research, University of Southern Denmark, Denmark

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Else-Marie Bladbjerg Department of Clinical Biochemistry, Hospital South West Jutland, University Hospital of Southern Denmark, Esbjerg, Denmark
Unit for Thrombosis Research, Department of Regional Health Research, University of Southern Denmark, Denmark

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Marianne Skovsager Andersen Department of Endocrinology, Odense University Hospital, Odense, Denmark
Department of Clinical Research, University of Southern Denmark, Odense, Denmark

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Johannes Jakobsen Sidelmann Department of Clinical Biochemistry, Hospital South West Jutland, University Hospital of Southern Denmark, Esbjerg, Denmark
Unit for Thrombosis Research, Department of Regional Health Research, University of Southern Denmark, Denmark

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of the haemostatic system as outcome measures were not defined in the original study ( 7 ), which was planned in 2015, and the power of the study was determined by the effect of TRT on lean body mass. Likewise, no studies examined the effect of TRT on

Article Type:
Research Article
Collections:
Reproduction
DOI:
https://doi.org/10.1530/EC-22-0455
Volume/Issue:
Volume 12: Issue 4
Open access
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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testosterone concentration were measured via immunoassays available for routine clinical care in Australia. All laboratories are accredited by the National Association of Testing Authorities. Sample size determination Power calculation was based on the

Article Type:
Research Article
Collections:
Reproduction
DOI:
https://doi.org/10.1530/EC-22-0170
Volume/Issue:
Volume 11: Issue 5
Open access
Magdalena Zgliczyńska Department of Obstetrics, Perinatology and Neonatology, Centre of Postgraduate Medical Education, Cegłowska, Warsaw, Poland

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Magdalena Ostrowska Department of Endocrinology, Centre of Postgraduate Medical Education, Cegłowska, Warsaw, Poland

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Kinga Żebrowska Department of Obstetrics, Perinatology and Neonatology, Centre of Postgraduate Medical Education, Cegłowska, Warsaw, Poland

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Iwona Szymusik Department of Obstetrics, Perinatology and Neonatology, Centre of Postgraduate Medical Education, Cegłowska, Warsaw, Poland

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Konrad Kowalski Masdiag Sp. z o.o., Stefana Żeromskiego, Warsaw, Poland

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Dorota Leszczyńska Department of Endocrinology, Centre of Postgraduate Medical Education, Cegłowska, Warsaw, Poland

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Katarzyna Kosińska-Kaczyńska Department of Obstetrics, Perinatology and Neonatology, Centre of Postgraduate Medical Education, Cegłowska, Warsaw, Poland

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, 4.5 min – 98% B, 4.6 min – 50% B. The total run time was 5.5 min. To compare the CLIA and LC-MS/MS methods, 25(OH)D 3 and 25(OH)D 2 concentrations were combined into 25(OH)D. Statistical analyses The power analysis for the study was carried

Article Type:
Research Article
Collections:
Reproduction
DOI:
https://doi.org/10.1530/EC-23-0201
Volume/Issue:
Volume 12: Issue 11
Open access
Pravik Solanki Faculty of Medicine, Nursing and Health Sciences, Monash University, Victoria, Australia
Alfred Health, Melbourne, Victoria, Australia

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Beng Eu Prahran Market Clinic, Victoria, Australia
Department of General Practice, Melbourne Medical School, The University of Melbourne, Victoria, Australia

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Jeremy Smith Faculty of Science, University of Western Australia, Perth, Australia

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Carolyn Allan Hudson Institute of Medical Research, Melbourne, Victoria, Australia

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Kevin Lee Faculty of Medicine, Nursing and Health Sciences, Monash University, Victoria, Australia

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Baseline measurements not available Karila et al. 2004 ( 53 ) Prospective study 21 male power athletes aged 24–42 years, undergoing medical assessment to rule out chronic diseases and medication use ‘Major users’ are those with cumulative

Article Type:
Research Article
Collections:
Reproduction
DOI:
https://doi.org/10.1530/EC-23-0358
Volume/Issue:
Volume 12: Issue 12
Open access
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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status and kisspeptin concentrations ( 1 , 7 , 9 , 15 , 18 , 19 ), we controlled for these factors. Participants’ SES was assessed based on family purchasing power, in accordance with the guidelines of the Brazilian Association of Market Research

Article Type:
Research Article
Collections:
Reproduction
DOI:
https://doi.org/10.1530/EC-22-0165
Volume/Issue:
Volume 11: Issue 10
Open access
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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156 for whom GHD was diagnosed during reproductive years), just as in the Vila’s international cohort (97.2% did not have children or report infertility). We thus have small samples and lack statistical power. This could be mostly explained by the

Article Type:
Research Article
Collections:
Reproduction
DOI:
https://doi.org/10.1530/EC-22-0241
Volume/Issue:
Volume 11: Issue 12
Open access
Shanlee M Davis Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado, USA
eXtraOrdinarY Kids Clinic, Children's Hospital Colorado, Aurora, Colorado, USA

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Rhianna Urban Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA

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Angelo D’Alessandro Department of Biochemistry and Molecular Genetics, University of Colorado School of Medicine, Aurora, Colorado, USA

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Julie A Reisz Department of Biochemistry and Molecular Genetics, University of Colorado School of Medicine, Aurora, Colorado, USA

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Christine L Chan Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado, USA

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Megan Kelsey Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado, USA

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Susan Howell Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado, USA
eXtraOrdinarY Kids Clinic, Children's Hospital Colorado, Aurora, Colorado, USA

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Nicole Tartaglia Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado, USA
eXtraOrdinarY Kids Clinic, Children's Hospital Colorado, Aurora, Colorado, USA

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Philip Zeitler Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado, USA
eXtraOrdinarY Kids Clinic, Children's Hospital Colorado, Aurora, Colorado, USA

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Peter Baker II Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado, USA

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recruited to participate in a study on cardiometabolic health, which was powered to detect differences in cardiorespiratory function not included here. Prepubertal exam, hypertension, diabetes, or exercise restrictions were exclusionary. Additionally, boys

Article Type:
Research Article
Collections:
Reproduction
DOI:
https://doi.org/10.1530/EC-22-0523
Volume/Issue:
Volume 12: Issue 5
Open access
Veronica Astro Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia

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Elisabetta Fiacco Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia

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Kelly Johanna Cardona-Londoño Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia

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Ilario De Toma Sequentia Biotech SL, Barcelona, Spain

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Hams Saeed Alzahrani Department of Genetic Medicine, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia

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Jumana Alama Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia

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Amal Kokandi Department of Dermatology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia

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Taha Abo-Almagd Abdel-Meguid Hamoda Department of Urology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia

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Majed Felemban Department of Medical Laboratory Sciences, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
Center of Innovation in Personalized Medicine, King Abdulaziz University, Jeddah, Saudi Arabia

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Antonio Adamo Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia

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-diabetes. For this reason, the power of the transcriptomic comparison of this 46,XY subject with KS patients could be biased in regards to ‘fertility’ and ‘glucose metabolism‘ GO terms. Therefore, further studies enrolling a larger number of 46,XY and 47,XXY

Article Type:
Research Article
Collections:
Reproduction
DOI:
https://doi.org/10.1530/EC-22-0515
Volume/Issue:
Volume 12: Issue 5
Open access
Peter Bond Department of Internal Medicine, Elisabeth TweeSteden Hospital, Tilburg, the Netherlands
Department of Performance and Image-enhancing Drugs Research, Android Health Clinic, Utrecht, the Netherlands

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Tijs Verdegaal Department of Internal Medicine, Elisabeth TweeSteden Hospital, Tilburg, the Netherlands
Department of Internal Medicine, Spaarne Gasthuis, Haarlem, the Netherlands

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Diederik L Smit Department of Internal Medicine, Elisabeth TweeSteden Hospital, Tilburg, the Netherlands
Department of Performance and Image-enhancing Drugs Research, Android Health Clinic, Utrecht, the Netherlands

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thrombotic risk: the trial was not adequately powered for this endpoint, subjects with hematocrit >50% at baseline were excluded from enrollment, and in those who developed and maintained a hematocrit >54% after testosterone dose reduction, TTh was stopped

Article Type:
Review Article
Collections:
Reproduction
DOI:
https://doi.org/10.1530/EC-24-0283
Volume/Issue:
Volume 13: Issue 10
Open access
Hans Valdemar López Krabbe Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark

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Jørgen Holm Petersen Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
Section of Biostatistics, University of Copenhagen, Copenhagen, Denmark

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Louise Laub Asserhøj Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
Department of Fertility, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark

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Trine Holm Johannsen Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark

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Peter Christiansen Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark

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Rikke Beck Jensen Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark

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Line Hartvig Cleemann Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark

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Casper P Hagen Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark

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Lærke Priskorn Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark

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Niels Jørgensen Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark

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Katharina M Main Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark

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Anders Juul Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark

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Lise Aksglaede Department of Growth and Reproduction, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
International Centre for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark

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-dependent curves: L, M, and S. The L curve adjusts for age-dependent skewness, the M curve corresponds to the age-dependent median, and the S curve is the age- dependent CV curve. The method is based on the Box–Cox power transformation, which transforms the data to

Article Type:
Research Article
Collections:
Reproduction
DOI:
https://doi.org/10.1530/EC-23-0031
Volume/Issue:
Volume 12: Issue 7
Open access