Ghazy, E. A., S. M. Al Muhayawi, S. A. Mourad, and R. A. Alahdal. “Comparison of Safety and Efficacy of Al-Hijama (Cupping) and Conventional Medical Therapy for Sinusitis (I)”. Journal of King Abdulaziz University - Medical Sciences, Vol. 25, no. 2, Dec. 2018, pp. 11-26, http://jkaumedsci.org.sa/index.php/jkaumedsci/article/view/702.