Khunkhew, S., A. Danthanasaramak, A. Thongprachom, P. Phathomthanapong, R. Saetung, and T. Saguanermsri. “OF Test and α Thalassemia-2”. Journal of Associated Medical Sciences, vol. 37, no. 3, Feb. 2015, p. 175, https://he01.tci-thaijo.org/index.php/bulletinAMS/article/view/60237.