Deep vein thrombosis (DVT) is a serious condition where blood clots develop in the deep veins of the legs.
About the link between long-haul air travel and DVT and how to reduce the chances of developing the condition.
Lead researcher: Professor Jeremy Grimshaw (Health Services Research Unit, Aberdeen)
This section tells you how to get medical treatment abroad, including information on the European Health Insurance card, or EHIC - the replacement for the E111.