Pattaranit, R., O. Lekbunyasin, V. Chantachum, C. Songsung, S. Pradubwong, and B. Chowchuen. “Study of In-patients’ Charge Cost of the Cleft Lip and Cleft Palate Patients Aged 4- 5 Years Old of Tawanchai Center, Srinagarind Hospital”. Srinagarind Medical Journal, vol. 28, no. 1, Aug. 2013, pp. 23-29, https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/11089.