Boonprasert, Sean. “The Association Between Lifestyle Risk Factors and Long COVID Syndrome in Outpatient Clinic Chiang Rai Regional Hospital, Chiang Rai”. Journal of Preventive Medicine Association of Thailand 15, no. 1 (April 30, 2025): 1–23. accessed October 9, 2026. https://he01.tci-thaijo.org/index.php/JPMAT/article/view/276112.