L.B. LAZEBNIK, S.V. LEVCHENKO Moscow State University of Medicine and Dentistry, 7 Kitaygorodsky proezd, Moscow, Russian Federation, 109074 Lazebnik L.B. — D. Med. Sc., Professor, Head of the Therapy, Geriatrics and Prevention Department, tel. (495) 6233660, e-mail: gastrossr@gmail.com Levchenko S.V. — PhD (Medicine), Assistant Professor of the Therapy, Geriatrics and Prevention Department, tel. (903) 7701906, e-mail: sv_levchenko@list.ru Having studied the […]