00586naa#a2200193#i#450# EN\INFRA-M\bibl\3996 20240929140039.7 2075-4094 20141105b2014####ek#y0engy0150####ca RUS RU The problem of the incidence of sexually transmitted infections in adolescents in the Ulyanovsky region Journal article Moscow INFRA-M Academic Publishing LLC. 2014 0 с. Journal article local Kachaeva Yu. Blinov Dmitry Semeleva E. zh-szf.ru