RT Journal Article SR Electronic T1 Traveling As a Risk Factor for Venous Thromboembolic Disease JF Respiratory Care FD American Association for Respiratory Care SP 1177 OP 1180 VO 51 IS 10 A1 Una C Ercegovac A1 Tracee L Metcalfe A1 Bennett H Penn A1 Kelly M Smith A1 Joann G Elmore YR 2006 UL http://rc.rcjournal.com/content/51/10/1177.abstract AB