L.M. MIROLYUBOV1,2, I.N. NURMEEV1,2 1Kazan State Medical University of the Ministry of Health of the Russian Federation, Kazan 2Children’s Republic Clinical Hospital, Kazan  Mirolyubov L.M. ― MD, Professor, Head of the Department of Children’s Surgery Address: 49 Butlerov Str., Kazan, Russian Federation, 420012, tel. (843) 267-89-57, e-mail: mirolubov@mail.ru The article views the main principles of […]