1. Andrology, Female Endocrinology and Gender Incongruence Unit Department of Experimental and Clinical Biomedical Sciences “Mario Serio” University of Florence Florence Italy
2. Endocrinology Unit Ospedali Riuniti AnconaPolytechnic University of Marche Ancona Italy
3. Andrology Unit Department of Life, Health and Environmental Sciences University of L’Aquila L’Aquila Italy
4. Center for Reproductive Medicine and Andrology Martin Luther University Halle‐Wittenberg Halle Germany
5. Department of Clinical and Experimental Medicine University of Catania Italy
6. Department of Clinical and Surgical Andrology Centre of Reproductive Medicine and Andrology Münster University Hospital Münster Germany
7. Department of Experimental Medicine Sapienza University of Rome Rome Italy
8. Department of Urology Pediatric Urology and Andrology Justus Liebig University Giessen Germany
9. Andrology Unit Tartu University Hospital Tartu Estonia
10. Andrology Department Fundació Puigvert Universitat Autònoma de BarcelonaInstituto de Investigaciones Biomédicas Sant Pau (IIB‐Sant Pau) Barcelona Spain
11. Department of Andrology Kasr El Aini Faculty of Medicine Cairo University Cairo Egypt
12. Endocrinology Unit Department of Experimental and Clinical Biomedical Sciences “Mario Serio” University of Florence Florence Italy
13. Department of Laboratory Careggi Hospital Florence Italy
14. Clinical Trials Coordinating Center Toscano Cancer InstituteUniversity Hospital Careggi Florence Italy