1. Department of Respiratory Medicine; Barts Health NHS Trust; London UK
2. Department of Gastroenterology; Royal London Hospital; Barts Health NHS Trust; London UK
3. Blizard Institute; National Center for Bowel Research; Queen Mary University of London; London UK
4. Blizard Institute; Barts and The London School of Medicine and Dentistry; Queen Mary University of London; London UK
5. Department of Infectious Diseases; Royal London Hospital; Barts Health NHS Trust; London UK
6. Department of Pathology; Royal London Hospital; Barts Health NHS Trust; London UK