Panyasaisophon T, Visuttranukul A, Chuenjairuang P. DEVELOPMENT AND EVALUATION OF A MODEL OF PARTICIPATION IN HEALTH PROMOTION FOR HAPPINESS AMONG THE ELDERLY. Suranaree J Sci Technol [internet]. 2026 Aug. 28 [cited 2026 Sep. 11];28(1):070012(1-10). available from: https://ph04.tci-thaijo.org/index.php/SUJST/article/view/14869