1. Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, United States
2. Division of Biostatistics, College of Public Health, The Ohio State University, Columbus, Ohio, United States
3. Department of Biomedical Informatics, College of Medicine, The Ohio State University, Columbus, Ohio, United States
4. Division of Gastroenterology, Department of Medicine, Mayo Clinic, Scottsdale, Arizona, United States
5. Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, The Ohio State University, Columbus, Ohio, United States