S.V. BATYRSHINA1, F.G. SADYKOVA2 ¹Kazan State Medical University, 49 Butlerov St., Kazan, Russian Federation, 420012 2Republican Clinical Dermatovenereology Dispensary, 4 Tolstoy St., Kazan, Russian Federation, 420012  Batyrshina S.V. — D. Med. Sc., Professor of the Department of Dermatology and Venereology, tel. (843) 236-99-92, e-mail: sbkdv @ mail. ru Sadykova F.G. — Head of the In-patient Department № 2, tel. (843) […]