Kanthawee, Phitsanuruk, Sathirakorn Pongpanich, Surasak Taneepanichskul, Pannee Meenuck, Rueanthong Maiarin, and Chamnarn Hansudewechakul. 2017. “Quality of Life, Psychosocial Health and Health Care Among Aging People in Chiang Rai Province, Thailand: The First Phase”. Journal of Health Research 28 (5):337-46. https://he01.tci-thaijo.org/index.php/jhealthres/article/view/93640.