ธงทอง ก. (2018) “Prevalence and Risk Factors for retinopathy of premature infants in KamPhaeng Phet Hospital”, Region 11 Medical Journal, 32(4), pp. 1261–1268. available at: https://he02.tci-thaijo.org/index.php/Reg11MedJ/article/view/176091 (accessed: 20 September 2026).