DEPRESSION STATUS AMONG 14-15 YEAR OLD STUDENTS AT PHUNG CHI KIEN SECONDARY SCHOOL, HUNG CHAU COMMUNE, NGHE AN PROVINCE AND SOME RELATED FACTORS. YHCĐ [Internet]. 2026 May 25 [cited 2026 Sept. 8];67(5). Available from: https://tapchiyhcd.vn/index.php/yhcd/article/view/5197