Duangsang, S. “Incidence and Factors Associated With Retinopathy of Prematurity (ROP) in Roiet Hospital”. Srinagarind Medical Journal, vol. 32, no. 1, Feb. 2017, pp. 10-16, https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/78515.