N.O. DAVYDOVA1, 2, A.A. VYALKOVA1, S.A. CHESNOKOVA1, E.V. AZAROVA1, 3, L.I. DROBOT1, A.A. POSNOV1, 2, L.I. PAVLENKO2 1Orenburg State Medical University, Orenburg 2Regional Children’s Clinical Hospital, Orenburg 3Orenburg Perinatal Center, Orenburg  Contact details: Davydova N.O. — PhD (Medicine), Associate Professor of the Department of Faculty Pediatrics Address: 6 Sovetskaya St., Orenburg, tel.: +7-903-360-14-14, e-mail: davydovanatalia2010@yandex.ru The article presents […]