Non-coeliac but gluten sensitive?

Many patients are following a wheat free diet, which they believe helps with their gastrointestinal symptoms, yet they don't exhibit markers of coeliac disease. Mabel Chew finds out from David Sanders, a professor of gastroenterology at the Royal Hallamshire Hospital, about non-coeliac gluten sensitivity. Also, Fiona Godlee gives us an update on the open data campaign.