Tác giả, “Current situation of health services utilization among elderly and identify relevant factors to the selecting and using this type of services in Hoang Mai district, Hanoi, 2015”, JHDS, vol 1, số p.h 01, tháng 11 2017, Truy cập: 10 Tháng Sáu 2026. [Online]. Available at: https://jhds.invatech.com.vn/index.php/jhds/article/view/12