Prakhunhungsit, S. “Non- Mydriatic Fundus Photograph Diabetic Retinopathy Screening in Primary Care Unit Setting by Paramedic Personnel”. Siriraj Medical Journal, vol. 69, no. 3, June 2017, pp. 122-7, https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/89541.