เรือนใจ ฐ., and ศิริ ส. “Smoking, Alcohol Drinking and Insufficient Physical Activity Among Rural Elderly in Chiang Rai Province, Thailand”. Lampang Medical Journal, vol. 37, no. 1, June 2016, pp. 1-8, https://he01.tci-thaijo.org/index.php/LMJ/article/view/185908.