1. Department of Urology, Innsbruck Medical University, Innsbruck, Austria
2. Department of Biochemical Pharmacology, Innsbruck Medical University, Innsbruck, Austria
3. Department of Radiology II, Innsbruck Medical University, Innsbruck, Austria
4. Department of Medical Statistics, Informatics and Health Economics, Innsbruck Medical University, Innsbruck, Austria
5. Department of Otolaryngology, Sisters of Charity Hospital, Wels, Austria