1. Department of Urology and Pediatric Urology; Medical University of Innsbruck; Linz; Austria
2. Department of Plastic, Reconstructive and Aesthetic Surgery; St. Vincent's Hospital; Linz; Austria
3. Department of Medical Statistics, Informatics and Health Economics, Innsbruck; St. Vincent's Hospital; Linz; Austria
4. Department of Urology; St. Vincent's Hospital; Linz; Austria