PT - JOURNAL ARTICLE ED - BMJ Publishing Group Ltd TI - Review: flight times >8 hours and presence of risk factors for VTE increases travel related VTE AID - 10.1136/ebm.12.4.105 DP - 2007 Aug 01 TA - Evidence Based Medicine PG - 105--105 VI - 12 IP - 4 4099 - http://ebm.bmj.com/content/12/4/105.short 4100 - http://ebm.bmj.com/content/12/4/105.full SO - Evid Based Med2007 Aug 01; 12