Amput, P., C. Sanguanchue, N. Suttakat, and P. Sukmee. “The Assessment of Lower Limb Muscles Strength and Endurance in Type 2 Diabetes Mellitus”. Srinagarind Medical Journal, vol. 30, no. 5, Dec. 2015, pp. 453-7, https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/43317.