Tamban, C., I. T. Isip-Tan, and C. Jimeno. “Use of Short Message Services (SMS) for the Management of Type 2 Diabetes Mellitus: A Randomized Controlled Trial”. Journal of the ASEAN Federation of Endocrine Societies, vol. 28, no. 2, May 2014, p. 143, https://www.asean-endocrinejournal.org/index.php/JAFES/article/view/68.