Hussain G, Rasheed BF, Rashid HH, Ashraf M, Manzoor M, Naeem Z, Kazmi SM, Qamar S. Prevalence of Patellofemoral Pain Syndrome and Its association with Knee Stiffness in Sanitary Workers: Prevalence of Patellofemoral Pain Syndrome. PJHS-Lahore [Internet]. 2023 Nov. 30 [cited 2024 Nov. 24];4(11):44-8. Available from: https://mail.thejas.com.pk/index.php/pjhs/article/view/1139