de Mesa, Uzziel, et al. “Development and Validation of a Questionnaire Evaluating Impaired Hypoglycemia Awareness Among Adult Filipino Patients With Type 2 Diabetes Mellitus”. Journal of the ASEAN Federation of Endocrine Societies, vol. 32, no. 2, Oct. 2017, p. 158, https://asean-endocrinejournal.org/index.php/JAFES/article/view/423.