Author/Authors :
Niknam, Ramin Digestive Disease Research Center - Shariati Haspital - Tehran University of Medical Sciences , Saberifiroozi, Mehdi Digestive Disease Research Center - Shariati Haspital - Tehran University of Medical Sciences , Mahmoudi, Laleh Department of Pharmacotherapy - Tehran University of Medical Sciences , Forouhesh Tehrani, Zahra Department of Pathology - Shariati Haspital - Tehran University of Medical Sciences