1. Enteric NeuroScience ProgramMayo ClinicRochesterMinnesotaUSA
2. Division of Gastroenterology and HepatologyMayo ClinicRochesterMinnesotaUSA
3. Department of Physiology and Biomedical EngineeringMayo ClinicRochesterMinnesotaUSA
4. Department of Microbiology and ImmunologyStanford University School of MedicineStanfordCaliforniaUSA