Agency for Healthcare Research and Quality (2008). Your Guide to Preventing and Treating Blood Clots (AHRQ Publication No. 08-0058-A). Rockville, MD: Agency for Healthcare Research and Quality. Also available online: http://www.ahrq.gov/consumer/bloodclots.htm.
Chandra D, et al. (2009). Travel and risk for venous thromboembolism: Meta-analysis. Annals of Internal Medicine, 151(3): 180-190.