เรือนใจ ฐาปกรณ์, and ศิริ สุคนธา. 2016. “Smoking, Alcohol Drinking and Insufficient Physical Activity Among Rural Elderly in Chiang Rai Province, Thailand”. Lampang Medical Journal 37 (1):1-8. https://he01.tci-thaijo.org/index.php/LMJ/article/view/185908.