1. Department of Urology and Pediatric Urology, Rostov State Medical University, Rostov-on-Don, Russia.
2. Deparment of Microbiology and Virology, Rostov State Medical University, Rostov-on-Don, Russia.
3. Regional Urology Centre, Regional Clinical Hospital No. 2, Rostov-on-Don, Russia.
4. Department of Urology, Technical University of Munich School of Medicine, Munich, Germany.