Mohamed, A. G., Refky, M. A., Sayouh, E. F., Abdelnaby, S. M. (2021). 'The Effect of Intravenous Infusion of Propofol or Aminophylline on Incidence and Severity of Post-dural Puncture Headache in Elective Cesarean Section', The Egyptian Journal of Hospital Medicine, 84(1), pp. 2646-2654. doi: 10.21608/ejhm.2021.189610