Shangyom, Duangtida, Mukda Detprapon, and Porntip Malathum. “Self-Care Behaviors in Older Persons With Upper Respiratory Tract Infection”. Ramathibodi Nursing Journal 24, no. 3 (January 7, 2019): 345–360. Accessed July 3, 2022. https://he02.tci-thaijo.org/index.php/RNJ/article/view/143432.