TY CONF TI STATISTICAL ANALYSIS OF THE QUALITY OF MEDICAL CARE IN THE RUSSIAN FEDERATION (ON THE EXAMPLE OF THE ROSTOV REGION) KW the quality of life KW human development index KW criteria and indicators for assessing the quality of life KW health KW healthcare KW the quality of medical care KW life expectancy KW the cost of human life JO Mathematics in Economics AU Shumilina, V.E. AU Shulyarenko, E.I. PY 2021 PB AUS PUBLISHERS