1. Geriatrics and Gerontology, Department of Public Health and Primary Care KU Leuven Leuven Belgium
2. Department of Geriatric Medicine UZ Leuven Leuven Belgium
3. Clinical and Experimental Endocrinology, Department of Chronic Diseases and Metabolism KU Leuven Leuven Belgium
4. Centre for Epidemiology Versus Arthritis The University of Manchester, NIHR Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust Manchester UK
5. Andrology, Women's Endocrinology and Gender Incongruence Unit, Mario Serio ‘Department of Experimental and Clinical Biomedical Sciences’ University of Florence Florence Italy
6. Endocrinology Unit, Mario Serio ‘Department of Experimental and Clinical Biomedical Sciences’ University of Florence Florence Italy
7. Department of Obstetrics, Gynaecology and Andrology Albert Szent‐Györgyi Medical University Szeged Hungary
8. Department of Medicine, Santiago de Compostela University Complejo Hospitalario Universitario de Santiago (CHUS) Santiago Spain
9. CIBER de Fisiopatología Obesidad y Nutricion (CB06/03) Instituto Salud Carlos III, Santiago de Compostela Santiago Spain
10. Department of Translational Medicine Lund University Malmö Sweden
11. Department of Andrology and Reproductive Endocrinology Medical University of Lodz Łódź Poland
12. Andrology Unit United Laboratories of Tartu University Clinics Tartu Estonia
13. Department of Metabolism, Digestion and Reproduction, Institute of Reproductive and Developmental Biology Imperial College London London UK
14. Institute of Biomedicine, Research Centre for Integrative Physiology and Pharmacology University of Turku Turku Finland
15. Department of Endocrinology, Manchester Royal Infirmary The University of Manchester Manchester UK
16. Exercise Physiology Research Group, Department of Movement Sciences KU Leuven Leuven Belgium