Viravan, N., S. . Kooptiwoot, P. . Prateepvanich, J. . Laurujisawat, N. . Sanguanpanich, and N. Saisavoey. “Group Cognitive Behavioral Therapy for Thai Patients With Chronic Pain: A Case Series Report”. Journal of the Psychiatric Association of Thailand, vol. 66, no. 2, June 2021, pp. 227-40, https://he01.tci-thaijo.org/index.php/JPAT/article/view/245684.