00666naa#a2200181#i#450# EN\\bibl\4058 20240426153355.5 20200218b2020####ek#y0engy0150####ca RU ANALYSIS OF RISK FACTORS FOR RECESSION OF THE GUMS IN PERSONS OF MIDDLE AGE Conference article/thesis Ekaterinburg TIRAZH Publishing House 2020 2 с. Conference article/thesis local Медицина. Охрана здоровья. 61 Elovicova Tat'yana Mihaylovna Griroriev Sergey Sergeevich Ismailova S. H. dental-press.ru