1. Department of Pediatric Gastroenterology, Hasbro Children’s Hospital, Brown University , Providence, Rhode Island , USA
2. PGSP-Stanford PsyD Consortium , Palo Alto, California , USA
3. WSU’s Elson S. Floyd College of Medicine , Spokane, Washington , USA
4. Department of Psychology, Seattle University , Seattle, Washington , USA
5. Center for Child Health, Behavior and Development, Seattle Children’s Research Institute, Department of Anesthesiology & Pain Medicine, University of Washington , Seattle, Washington , USA