Viravan, Natee, Sirirat Kooptiwoot, Pradit Prateepvanich, Janravee Laurujisawat, Naratip Sanguanpanich, and Nattha Saisavoey. “Group Cognitive Behavioral Therapy for Thai Patients With Chronic Pain: A Case Series Report”. Journal of the Psychiatric Association of Thailand 66, no. 2 (June 29, 2021): 227–240. Accessed September 29, 2022. https://he01.tci-thaijo.org/index.php/JPAT/article/view/245684.