J. Tootian Tourghabe, H. R. Arabikhan, A. Alamdaran, and H. Zamani Moghadam, “Emergency Medicine Resident versus Radiologist in Detecting the Ultrasonographic Signs of Acute Cholecystitis; a Diagnostic Accuracy Study”, Arch Acad Emerg Med, vol. 6, no. 1, p. e19, Nov. 2018.