1. The Robert Hague Centre for Diabetes and Endocrinology, Barnsley Hospital, Barnsley, U.K.
2. Department of Human Metabolism, School of Medicine and Biomedical Science, University of Sheffield, Sheffield, U.K.
3. Center for Andrology and Sexual Medicine, Karolinska University Hospital and the Karolinska Institute, Stockholm, Sweden
4. Center for Reproductive Medicine and Andrology, University Hospital Halle (Saale), Martin-Luther University Halle-Wittenberg, Halle, Germany
5. Centre d’Etudes et de Traitement de la Pathologie de l’Appareil Reproducteur et de la Psychosomatique (CETPARP), Lille, France
6. Department of Urology, VU University Medical Center, Amsterdam, the Netherlands
7. Department of Urology, Hospital Sanitas-La Zarzuela, Madrid, Spain
8. Department of Urology, Carlos Haya University Hospital, Malaga, Spain
9. Department of Cardiology, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Pisana, Rome, Italy
10. Quantics Consulting Limited, Tweed Horizons, Newtown St Boswells, Scottish Borders, U.K.
11. Clinical Research Department, ProStrakan, Galashiels, U.K.
12. Department of Cardiology, Royal Hallamshire Hospital, Sheffield, U.K.