Chowchuen, Bowornsilp, and Keith Godfrey. “Investigating the Occurrences of Cleft Lip, Cleft Palate and Other Related Birth Defects”. Srinagarind Medical Journal 16, no. 1 (November 21, 2013): 27–36. Accessed November 28, 2022. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/14259.