00577naa#a2200193#i#450# EN\\bibl\21717 20241122084659.5 2077-7566 20160726b2016####ek#y0engy0150####ca RU Defects in the work of dentists in the compulsory health insurance system Journal article Ekaterinburg TIRAZH Publishing House 2016 4 с. Journal article local Lebedjancev V. V. Kochkina N. N. Poljakova E. V. Kamalitdinova N. M. dental-press.ru