1. Department of Anesthesiology and Intensive Care, Medical Faculty, Tabriz University of Medical Sciences, Tabriz, Iran
2. Department of Gynecology and obestetric, Tabriz University of Medical Sciences, Tabriz, Iran
3. Emergency Medicine Research Team, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
4. Department of Emergency Medicine, Maragheh University of Medical Sciences, Maragheh, Iran