กรมอนามัย ก. Volume 7 Number 2 July - December 2002. Th Dent PH J [internet]. 2002 Dec. 30 [cited 2026 Sep. 19];7(2):1-93. available from: https://he02.tci-thaijo.org/index.php/ThDPHJo/article/view/213098