Phongchamnaphai, Phana. “The Effectiveness of Acupuncture for Pain Relief in Knee Osteoarthritis Patients in Khaokho Hospital, Phetchabun Province”. Journal of Health Science of Thailand 17, no. Sup.3 (November 8, 2018): SIII623–632. Accessed December 5, 2025. https://thaidj.org/index.php/JHS/article/view/5102.