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Long haul flights double the risk of thrombosis related to air travel

BMJ 2007; 334 doi: https://doi.org/10.1136/bmj.39258.479063.DB (Published 28 June 2007) Cite this as: BMJ 2007;334:1343
  1. John Zarocostas
  1. Geneva

    Epidemiological studies show that the risk of venous thromboembolism doubles after long haul air travel of more than four hours' duration, a World Health Organization report says.

    The final report of phase I of the WHO research into global hazards of travel (WRIGHT) project concludes that the absolute risk of venous thromboembolism among healthy individuals for a flight of more than four hours was 1 in 6000. Pathophysiological studies, it says, support these findings.

    The studies were carried out by an international collaboration of researchers from …

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