title: Echocardiographer as patient advocate: lessons from the contrast debate.
authors.forename: Thomas
authors.initials: T
authors.lastname: Ryan
mesh_terms: D001291:Attitude of Health Personnel; D003287:Contrast Media / Q000009:adverse effects*; D004348:Drug Labeling / Q000639:trends*; D004452:Echocardiography / Q000639:trends*; D010344:Patient Advocacy / Q000639:trends*; D011358:Product Surveillance, Postmarketing / Q000639:trends*; D014481:United States
chemical_list: D003287:Contrast Media