“EVALUATION OF SLEEP QUALITY AND SOME RELATE FACTORS OF THE ELDERLY IN OUTPATIENTS TREATMENT AT TIEN GIANG CENTRAL GENERAL HOSPITAL IN 2021”. Vietnam Journal of Community Medicine 63, no. 2 (April 6, 2022). Accessed September 9, 2026. https://tapchiyhcd.vn/index.php/yhcd/article/view/311.