1. Neurogastroenterology Group (GI Physiology Unit); Blizard Institute of Cell and Molecular Science; Queen Mary University; London UK
2. University Hospitals of North Midlands; Royal Stoke University Hospital; Stoke on Trent UK
3. Biostatistics Unit; Department of Clinical Sciences; Liverpool School of Tropical Medicine; Liverpool UK
4. Department of Gastroenterology; University College London Hospital; London UK
5. The Functional Gut Clinic; London UK
6. Department of Medical Sciences; Uppsala University Hospital; Uppsala Sweden
7. Medtronic; Minneapolis MN USA
8. Gastroenterology Unit; Massachusetts General Hospital; Harvard Medical School; Boston MA USA
9. Section of Gastroenterology and Hepatology; Georgia Health Sciences University; Medical College of Georgia; Augusta GA USA
10. Division of Gastroenterology; University of Michigan Health System; Ann Arbor MI USA
11. Clinical Enteric Neuroscience Translational and Epidemiological Research (CENTER); Division of Gastroenterology and Hepatology; Mayo Clinic; Rochester MN USA