Tipyawong T (2018) “Comparative Effectiveness Study between Nortriptyline and Clonidine for Smoking Cessation in Patients at Princess Mother National Institute on Drug Addict Treatment”, Journal of The Department of Medical Services, 43(5), pp. 49–55. Available at: https://he02.tci-thaijo.org/index.php/JDMS/article/view/247761 (Accessed: 29 September 2022).