Jirawatkul, A. “What Are the Inclusion and Exclusion Criteria? - เกณฑ์คัดเข้าและคัดออกคืออะไร”. Journal of Health Science of Thailand, vol. 26, no. 6, Dec. 2017, pp. 974-5, https://thaidj.org/index.php/JHS/article/view/1337.