Soontrapa, Supasin, Sukree Soontrapa, Charoonsak Somboonporn, and Woraluk Somboonporn. “Vitamin D Deficiency and the Risk of Osteoporosis in Elderly Women”. Srinagarind Medical Journal 17, no. 3 (November 22, 2013): 154–159. Accessed May 19, 2022. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/14562.