19. ANALYSIS OF SOME RELATED FACTORS TO THE QUALITY OF LIFE AMONG ELDERLY PEOPLE AT VAN AN COMMUNE, CHI LINH CITY, HAI DUONG AND VINH TIEN COMMUNE, KIM BOI DISTRICT, HOA BINH. YHCĐ [Internet]. 2024 July 10 [cited 2026 Sept. 9];65(CĐ 5 - NCKH). Available from: https://tapchiyhcd.vn/index.php/yhcd/article/view/1260