Institution: | 1. Arthritis Research UK Epidemiology Unit, The University of Manchester, Manchester Academic Health Science Centre, , Manchester, UK;2. Aberdeen Pain Research Collaboration (Epidemiology Group), University of Aberdeen, , UK;3. Department of Surgery and Cancer, Imperial College London, , UK;4. Department of Obstetrics, Gynaecology and Andrology, Albert Szent‐Gyorgy Medical University, , Szeged, Hungary;5. Department of Medicine, Santiago de Compostela University, , Spain;6. Andrology Unit, Department of Clinical Physiopathology, University of Florence, , Italy;7. Department of Andrology and Reproductive Endocrinology, Medical University of Lodz, , Poland;8. Andrology Unit, United Laboratories of Tartu University Clinics, , Estonia;9. Department of Andrology and Endocrinology, Katholieke Universiteit Leuven, , Belgium;10. Department of Endocrinology, Manchester Royal Infirmary, The University of Manchester, , UK |