Pongsupot, S. and Ritthagol, W. (2020) “Etiology of Cleft Lip and Cleft Palate”, Thai Journal of Orthodontics. Songkhla, Thailand, 9(2), pp. 41–49. available at: https://he01.tci-thaijo.org/index.php/THAIORTHO/article/view/249554 (accessed: 3 September 2026).