Silva, M. E. C., and S. Pongpanich. “Store Availability and In-Store Availability of Basic Diabetic-Healthy Food Options in Selected Barangays in Davao City, Philippines”. Journal of Health Research, vol. 27, no. 3, May 2017, pp. 165-71, https://he01.tci-thaijo.org/index.php/jhealthres/article/view/87898.