Saengpao, C. and Kongkaew, T. (2022) “RETURN AND RISK ANALYSIS OF HEALTH CARE SERVICE SECTOR IN PRE-COVID-19 PERIOD AND DURING THE OUTBREAK USING THE CAPITAL ASSET PRICING MODEL (CAPM)”, RMUTT GLOBAL BUSINESS ACCOUNTING AND FINANCE REVIEW. Pathum Thani, Thailand, 6(2), pp. 1–13. available at: https://so01.tci-thaijo.org/index.php/GBAFR/article/view/261827 (accessed: 10 December 2025).