1. Department of Epidemiology Brown University Providence Rhode Island USA
2. Biogen Cambridge Massachusetts USA
3. Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health Baltimore Maryland USA
4. Department of Pediatrics, Cincinnati Children's Hospital Medical Center University of Cincinnati College of Medicine Cincinnati Ohio USA
5. Department of Radiology, Cincinnati Children's Hospital Medical Center University of Cincinnati College of Medicine Cincinnati Ohio USA
6. Department of Biostatistics, Epidemiology, and Informatics, Perelman School of Medicine University of Pennsylvania Philadelphia Pennsylvania USA
7. Department of Family Medicine Warren Alpert Medical School of Brown University Providence Rhode Island USA
8. Kent Memorial Hospital, Warwick Rhode Island USA
9. Division of Gastroenterology, Hepatology, and Nutrition Cincinnati Children's Hospital Medical Center Cincinnati Ohio USA
10. Faculty of Health Sciences Simon Fraser University Burnaby British Columbia Canada