1. Frontier Research Institute for Interdisciplinary Sciences (FRIS), Tohoku University, Sendai, Japan
2. Behavioral Medicine, Graduate School of Medicine, Tohoku University, Sendai, Japan
3. Psychosomatic Medicine, Tohoku University Hospital, Sendai, Japan
4. Laboratory for Cognitive Neurology, KU Leuven, Belgium
5. Center for Digestive Diseases, Wingate Institute of Neurogastroenterology, Barts and the London School of Medicine and Dentistry, Queen Mary College, University of London, UK