title: Controversy concerning E.R. physician performance of procedures.
authors.forename: Stephen R
authors.initials: SR
authors.lastname: Baker
mesh_terms: D000005:Abdomen / Q000000981:diagnostic imaging*; D002764:Cholecystitis / Q000000981:diagnostic imaging; D004636:Emergency Service, Hospital; D042882:Gallstones / Q000000981:diagnostic imaging; D006801:Humans; D007396:Internship and Residency; D008505:Medical Staff, Hospital / Q000193:education; D019095:Point-of-Care Systems; D011871:Radiology / Q000193:education; D018084:Ultrasonography, Interventional