R. Mitkitti, P. Thammatha, K. Laosunthara, and C. Laosunthara, “Quality of Life among Successful Quit Smokers, Mae Rai Sub-District Health Promoting Hospital, Mae Chan District, Chiang Rai Province”, Health Sci J Thai, vol. 4, no. 1, pp. 44–53, Feb. 2022.