Boontantrapiwat, Sinsucha, and Supatra Chuen-im. 2018. “A Result of Diabetic Retinopathy Screening by Non-mydriatic Fundus Camera in Krathumban Hospital Samut Sakhon Province”. Region 4-5 Medical Journal 31 (4):353-58. https://he02.tci-thaijo.org/index.php/reg45/article/view/144579.