1. Department of Neonatal Surgery, Municipal Pediatric Hospital, Irkutsk, Russia.
2. Department of Pediatric Surgery, Irkutsk State Medical Academy of Continuing Education (IGMAPO), Irkutsk, Russia.
3. Department of Pediatric Surgery, State Medical University, Irkutsk, Russia.
4. Municipal Pediatric Clinical Hospital, Kemerovo, Russia.
5. Department of Pediatric Surgery, Hadassah University Medical Center, Jerusalem, Israel.