A.K. SHERSTENIKOVA, S.L. KASHUTIN, L.M. ZHURAVLEV, V.S. NEKLYUDOBA, E.I. TEDDER Northern State Medical University, 51 Troitskiy prospekt, 163000 Arkhangelsk, Russian Federation  Sherstennikova A.K. — Cand. Med. Sc., Associate Professor of the Normal Physiology Department, e-mail: a.sherstennikova@yandex.ru Kashutin S.L. — Doc. Med. Sc., Head of the Skin and Venereal Diseases Department, e-mail: sergeycash@yandex.ru Zhuravlev L.M. — […]