1. Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, USA
2. Department of Gastroenterology, Faculty of Medicine, Oita University, Japan
3. Division of Gastroenterology and Hepatology, Johns Hopkins University School of Medicine, USA
4. Department of Neuroscience, Johns Hopkins University School of Medicine, USA
5. Department of Biomedical Engineering, Johns Hopkins University School of Medicine, USA
6. Department of Mental Health, Johns Hopkins University Bloomberg School of Medicine, USA