Author/Authors :
El-Seoud, Galal Abo Ain Shams University - Faculty of Medicine - Department of Anesthesia, Intensive Care and Pain Management, Egypt , Mikhael, Adel Ain Shams University - Faculty of Medicine - Department of Anesthesia, Intensive Care and Pain Management, Egypt , El-Sersy, Mayar H. Ain Shams University - Faculty of Medicine - Department of Anesthesia, Intensive Care and Pain Management, Egypt , Fathallah, Tamer M. Ain Shams University - Faculty of Medicine - Department of Anesthesia, Intensive Care and Pain Management, Egypt