1. Department of Urology, Istanbul Kanuni Sultan Suleyman Egitim ve Arastirma Hastanesi, Istanbul, Turkey;
2. Okmeydani Training and Research Hospital, Istanbul, Turkey;
3. Department of Urology, Catalca Ilyas Cokay State Hospital, Istanbul, Turkey;
4. Turkiye Cumhuriyeti Saglik Bakanligi Okmeydani Egitim ve Arastirma Hastanesi, Istanbul, Turkey