Thuamthai, P., and J. Phengjard. “Factors Related to Self-Care Behaviors for Preventing Osteoporosis Among Elderly People with Chronic Obstructive Pulmonary Diseases”. Thai Red Cross Nursing Journal, vol. 15, no. 1, July 2022, pp. 207-20, https://he02.tci-thaijo.org/index.php/trcnj/article/view/255505.