RT Journal Article SR Electronic T1 Review: Noninvasive tests are useful only for symptomatic deep venous thrombosis JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 158 OP 158 DO 10.1136/ebm.1998.3.158 VO 3 IS 5 YR 1998 UL http://ebm.bmj.com/content/3/5/158.abstract AB