00592naa#a2200181#i#450# EN\\bibl\53973 20250415073830.2 2070-8092 20221021b2022####ek#y0engy0150####ca RU PAID AND FREE MEDICAL SERVICES: HISTORICAL PARALLELS OF DEVELOPMENT Journal article Simferopol V.I. Vernadsky Crimean Federal University 2022 6 с. Journal article local Организация здравоохранения. 614.2 Sukhareva I. A. Pevzner D. A. cfuv.editorum.ru