1. Senior Lecturer in the Centre for Neuroscience and Trauma, Blizard Institute, Wingate Institute of Neurogastroenterology, Barts and the London School of Medicine & Dentistry, Queen Mary University of London, London, and Consultant Gastroenterologist in the Department of Gastroenterology, University Hospitals of North Midlands, Stoke on Trent, Staffordshire ST4 6QG
2. Clinical Research Fellow in the Centre for Neuroscience and Trauma, Blizard Institute, Wingate Institute of Neurogastroenterology, Barts and the London School of Medicine & Dentistry, Queen Mary University of London, London
3. Professor of Neurogastroenterology in the Centre for Neuroscience and Trauma, Blizard Institute, and Director of the Wingate Institute of Neurogastroenterology, Barts and the London School of Medicine & Dentistry, Queen Mary University of London, London