Diagnostic strategy in deep-vein thrombosis.
D005544:Forecasting; D006801:Humans; D007866:Leg / Q000098:blood supply / Q000000981:diagnostic imaging; D008485:Medical Audit; D015203:Reproducibility of Results; D012189:Retrospective Studies; D014463:Ultrasonography; D020246:Venous Thrombosis / Q000175:diagnosis* / Q000000981:diagnostic imaging