Akrapandit, M. . “Survive or Die . Who Determine? A Study on Probability to Survive of the Elderly in Nangrong District, Thailand”. Journal of Population and Social Studies [JPSS], vol. 10, no. 1, May 2023, pp. 1-27, https://so03.tci-thaijo.org/index.php/jpss/article/view/268557.