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Three recent
case-control studies provide conflicting results on the possible association between air
travel and venous thromboembolic disease. A report by Ferrari, et al, shown here, suggests
a higher percentage of air and train travel among persons with DVT and emboli (cases) and
those without it (controls). See: Ferrari E, Chevallier T, Chapelier A, Baudouy M. Travel as a risk factor for venous thromboembolic disease; a case-control study. Chest 115(2):440-444, 1999. |