QUỲNH, L. H.; TRANG, P. T. T.; VỮNG, N. Đăng. 58. Safe sex knowledge and the prevalence of sexual intercourse among 12th-grade students at Nguyen Trai high school in Thuong Tin district, Hanoi in 2023. Journal of Medical Research, [S. l.], v. 195, n. 10, p. 544-552, 2025. DOI: 10.52852/tcncyh.v195i10.3958. Disponível em: https://tapchinghiencuuyhoc.vn/index.php/tcncyh/article/view/3958. Acesso em: 6 nov. 2026.