Sukchan, P., Chemoh, W., & Payanglee, K. (2019). Morbidity and Multi-morbidity among the Elderly Population in Southernmost Thailand: Cox Proportional Hazards Regression Model of Survival Approach. Princess of Naradhiwas University Journal, 12(1), 89–105. Retrieved from https://li01.tci-thaijo.org/index.php/pnujr/article/view/213939