1. Department of Anesthesia, College of Health and Medical Technology, Al-Ayen University, Nasiriyah, Iraq
2. Department of Anesthesia and Intensive Care, Faculty of Medicine Ibn El Jazzar, University of Sousse, Sousse, Tunisia
3. Department of Anesthesia and Intensive Care, Sahloul Teaching Hospital, University of Sousse, Faculty of Medicine of Sousse, Sousse, Tunisia
4. Thi Qar University Medical College, Nasiriyah, Iraq