Gomaa Zohry Hussien, Fatma Ibrahim Salman, Sandra Mohamed Ahmed, Haytham Rizk and Ahmed Ragab Abdel Hakeim (2023) “Efficacy of superior cervical ganglion (SCG) block on the incidence and severity of vasospasm after middle cerebral artery (MCA) aneurysmal surgery using transcranial Doppler (TCD): A Randomized controlled trial”, Journal of Population Therapeutics and Clinical Pharmacology, 30(8), pp. 405–412. doi: 10.47750/jptcp.2023.30.08.043.