00584naa#a2200205#i#450# EN\INFRA-M\bibl\9992 20260818072231.2 2075-4094 20151208b2015####ek#y0engy0150####ca RUS RU Regional aspects of the epidemiology and clinics of syphilis in children Journal article Moscow INFRA-M Academic Publishing LLC. 2015 0 с. Journal article local Fedina N. Tkachenko T. Dmitriev A. Gudkov R. naukaru.ru