Comparison of different ratios of propofol-ketamine admixture in rapid-sequence induction of anesthesia for emergency laparotomy: a randomized controlled trial. - Elsherbiny, Mona; Hasanin, Ahmed; Kasem, Sahar; Abouzeid, Mohamed; Mostafa, Maha; Fouad, Ahmed; Abdelwahab, Yaser (BMC Anesthesiology, 2023)