1. Urologische Facharztpraxis, Frankenwaldklinik, Kronach, Germany;
2. Urologikum am Zingel, Hildesheim, Germany;
3. Urologisches Zentrum, Herne, Germany;
4. Jenapharm, Jena, Germany;
5. Department of Oncology and Metabolism, University of Sheffield, Sheffield, UK;
6. Department of Internal Medicine, Endocrine Section, VU Medical Centre, Amsterdam, The Netherlands