Youssef, E. F., K. A. Hassan, M. E. Shanab, M. Y. Habash, S. M. A. Abdelaal, and M. M. A. Hegazy. “Prevalence of Patellofemoral Pain Among Medical Students in Egypt”. International Journal of Health Sciences, vol. 6, no. S8, July 2022, pp. 599-08, doi:10.53730/ijhs.v6nS8.10492.