For correspondence: Romantsova E.B. – D. Med. Sc., Professor, Head of the Department of Pediatrics Amur State Medical Academy, 95 Gorkiy Str., 675006, Blagoveshchensk, Amur oblast, tel. (4162) 31-90-09, e-mail: [email protected] The work presents analysis of research results of vitamin D metabolites in sickly children. It has been found that 81.2% of 3-6 y.o. pre-school […]

M.A. RYABOVA, O.M. KOLESNIKOVA The First St. Petersburg State Medical University named after acad. I.P. Pavlov, 6-8 Lev Tolstoy St., St. Petersburg, Russian Federation, 197022 Ryabova M.A. — D. Med. Sc., Professor of the Department of Otorhinolaryngology, tel. (812) 499-70-19, e-mail: [email protected] Kolesnikova O.M. — Cand. Med. Sc., otolaryngologist of the First St. Petersburg State […]