Ammartyothin, Surasak, and Sathirakorn Pongpanich. 2017. “Perceptions and Satisfactions Regarding to the National Policy Implementation for the Elderly: Case Study in Phrasamutchedi District, Samutprakan Province, Thailand”. Journal of Health Research 27 (4):259-66. https://he01.tci-thaijo.org/index.php/jhealthres/article/view/88687.