1. Department of Urology, EV PRATTEIN Rehabilitation Centre, 38222 Volos, Greece
2. Department of Urology, Faculty of Medicine, School of Health Sciences, University of Ioannina, 45110 Ioannina, Greece
3. Third Department of Urology, Attikon University Hospital, School of Medicine, National and Kapodistrian University of Athens, 12462 Athens, Greece
4. Department of Urology, Cambodia-China Friendship Preah Kossamak Hospital, Phnom Penh 120406, Cambodia