1. Institute of Urology and Andrology; Segeberger Kliniken; Norderstedt Germany
2. Gulf Medical University; Ajman UAE
3. Dresden International University; Dresden Germany
4. Global Medical Affairs Men's Healthcare; Bayer Pharma AG; Berlin Germany
5. Department of Epidemiology and Statistics; Boston University School of Public Health; Boston MA USA
6. Department of Internal Medicine; Endocrine Section; VU medical Center; Amsterdam The Netherlands