กรมอนามัย ส. Volume 12 Number 2 July - September 2007. Thai Dental Public Health Journal, Bangkok, Thailand, v. 12, n. 2, 2007. Disponível em: https://he02.tci-thaijo.org/index.php/ThDPHJo/article/view/212234. Acesso em: 19 sep. 2026.