King’s College London, King’s College London, St Marks Hospital and Academic Institute - Department of Gastroenterology, Queen Mary University of London, Queen Mary University of London, Queen Mary University of London, St Mark’s Hospital Central Middlesex, Queen Mary University of London - Centre for Neuroscience, King’s College London, University of Greenwich, Independent, Independent, University of Bristol, Queen Mary University of London, St. George’s University of London, Queen Mary University of London, Imperial College London, King’s College London, Queen Mary University of London and King’s College London