Zaheer M, Fatima N, Riaz U, Haseeb N. Association of heavy bag lifting time with postural pain in secondary school students. PBMJ [Internet]. 2022 Feb. 28 [cited 2024 Apr. 19];5(2):64-7. Available from: https://www.pakistanbmj.com/journal/index.php/pbmj/article/view/232