1. Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
2. Surgery Clinic, “Dr. Carol Davila” Clinical Nephrology Hospital, 010731 Bucharest, Romania
3. Nephrology Clinic, “Dr. Carol Davila” Clinical Nephrology Hospital, 010731 Bucharest, Romania
4. Department of Urology, “Prof. Dr. Th. Burghele” Hospital, 050652 Bucharest, Romania