00671naa#a2200217#i#450# EN\\bibl\45540 20240426230756.5 2077-7566 20210812b2021####ek#y0engy0150####ca RUS RU PREVALENCE OF PERIAPICAL TISSUE DISEASES Journal article Ekaterinburg TIRAZH Publishing House 2021 4 с. Journal article local Медицина. Охрана здоровья. 61 RUS Betkova Kira Veniaminovna Lomiashvili Larisa Mihaylovna Chekina Anna V. Poselyanova Irina Vladimirovna dental-press.ru