Othman, I.K., Mohamad, N., Sidek, S., Bhaskar, R.N. and Kuan, C.S. 2020. Risk factors associated with piriformis syndrome: A systematic review. Science, Engineering and Health Studies. 14, 3 (Oct. 2020), 215–233. DOI:https://doi.org/10.14456/sehs.2020.20.