1. Gail and Gerald Oppenheimer Family Center for Neurobiology of Stress and Resilience, Department of Medicine, David Geffen School of MedicineUniversity of California Los Angeles California
2. Institute of Brain Science, Faculty of MedicineNational Yang‐Ming University School of Medicine Taipei Taiwan
3. Endoscopy Center for Diagnosis and TreatmentTaipei Veterans General Hospital Taipei Taiwan
4. Division of Gastroenterology, Department of MedicineTaipei Veterans General Hospital Taipei Taiwan