TY JOUR TI THE STUDY OF THE STRUCTURE AND REGIONAL DIFFERENTIATION OF THE MORBIDITY RATE OF THE RUSSIAN POPULATION BY THE MAIN CLASSES OF DISEASES KW econometrics KW structural studies KW statistical studies KW monitoring tools KW morbidity monitoring JO MOSCOW ECONOMIC JOURNAL AU Pul'kin, I.S. AU Sazonov, A.I. AU Chekalkin, N.S. AU Evseeva, O.A. AU Sokolaeva, N.N. PY 2024 IS 9 PB Electronic science