Document Type : Original Article
Authors
1 Assistant Professor of Surgery, Fellowship of colorectal surgery, Firoozgar Hospital, Iran University of Medical Sciences, Tehran, Iran
2 Associate Professor of Anesthesia, Firoozgar Hospital, Iran University of Medical Sciences, Tehran, Iran
3 Resident of Anesthesiology, Firoozgar Hospital, Iran University of Medical Sciences, Tehran, Iran
4 Resident of General Surgery, Firoozgar Hospital, Iran University of Medical Sciences, Tehran, Iran
Keywords