JAFRI, M. R.; SAMAD, A.; NISA, Z.- UN; ARSALAN, S. A. U.; JOHN, A.; KHAN, A. K. Frequency of Work Related Musculoskeletal Knee Pain among Health Care Practitioners of Lahore, Pakistan. Pakistan Journal of Physical Therapy (PJPT), v. 4, n. 2, p. 08-13, 16 ago. 2021.