A statement by The Royal Free and University College Medical School and The Royal Free Hampstead NHS Trust

We are entirely satisfied that the investigations performed on the children reported in the Lancet paper had been subjected to appropriate and rigorous ethical scrutiny. Because the nature of the condition affecting child behaviour and gastroenterological symptoms was unknown and required elucidation, the investigation of these children was properly submitted to and fully discussed by the Ethical Practices Committee at the Royal Free Hampstead...