A.V. DUBOVAYA1, N.A. USENKO1, E.V. BORDYUGOVA1, N.A. TONKYKH1, 2, A.P. DUDCHAK1  1M. Gorky Donetsk National Medical University, Donetsk, Donetsk People’s Republic 2V.K. Gusak Institute of Urgent and Reconstructive Surgery, Donetsk, Donetsk People’s Republic   Contact details: Usenko N.A. —– Assistant Lecturer of the Department of Pediatrics No. 3 Address: 16 Illicha Ave., Donetsk, 283003, tel.: +7-949-354-93-18, e-mail: usenkonadia@mail.ru […]