Yu.V. Krasotkina, N.N. Sokolov

D.А. Chizhikov - Surgeon, Post-graduate Student, Establishment of Health Care «Gorokhoveckaja CRH». E-mail: Dmach@yandex.ru L.В. Fomin - Post-graduate Student, GBOU TLU Novgorod state Medical Academy of the Health Ministry of the Russian Federation. E-mail: reff@pochta.ru V.I. Borisov - Dr. Sc. (Med.), Professor, GBOU TLU Novgorod State Medical Academy of the Health Ministry of the Russian Federation. E-mail: viborissov@mail.ru