Esquerrà, Marià [Abdominal ultrasound: a diagnostic tool within the reach of general practitioners]. [electronic resource] - Atencion primaria Oct 2012 - 576-83 p. digital Publication Type: Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't ISSN: 1578-1275 Standard No.: 10.1016/j.aprim.2011.07.016 doi Subjects--Topical Terms: Abdomen--diagnostic imagingClinical CompetenceDouble-Blind MethodGeneral Practice--educationHumansProspective StudiesUltrasonography--standards