RT Journal Article SR Electronic T1 Harms of CT scanning prior to surgery for suspected appendicitis JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 3 OP 4 DO 10.1136/ebmed-2014-110075 VO 20 IS 1 A1 William Rogers A1 Jerome Hoffman A1 Naudereh Noori YR 2015 UL http://ebm.bmj.com/content/20/1/3.abstract