Phoophong, Suprawee, Kerada Krainuwat, and Piyatida Nakagasien. 2020. “Predicting Factors of Intention to Quit Smoking Among Employees in Public Health Centers, Bangkok Metropolitan Administration”. Nursing Science Journal of Thailand 38 (3):63-77. https://he02.tci-thaijo.org/index.php/ns/article/view/241750.