Assessing the impact of heat stress exposure on heat strain: An analysis of outdoor and semi-outdoor roof tile workers using the Physiological Strain Index . Int J Occup Saf Health [Internet]. 2026 Jul. 10 [cited 2026 Jul. 12];16(2):261-72. Available from: https://www.nepjol.info/index.php/IJOSH/article/view/89136