1. Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy, 8 Eroii Sanitari, 050474 Bucharest, Romania
2. Department of Urology, “Saint John” Clinical Emergency Hospital, 13 Vitan-Barzesti, 042122 Bucharest, Romania
3. Department of Urology, “Prof. Dr. Th. Burghele” Clinical Hospital, 20 Panduri, 050659 Bucharest, Romania