1. Yale School of Medicine, New Haven, CT
2. Beth Israel Deaconess Medical Center
3. St. Antonius Hospital, Nieuwegein
4. Amsterdam University Medical Center, Amsterdam, The Netherlands
5. Center for Prevention and Diagnosis of celiac disease, Foundation IRCCS Ca’ Granda Ospedale Maggiore Policlinico of Milan, Italy
6. Division of Pathology, Foundation IRCCS Ca’ Granda Ospedale Maggiore Policlinico of Milan, Italy
7. Boston Children’s Hospital, Boston, MA
8. Seattle’ Children’s Hospital, Seattle, WA
9. Institute of Pathology, Friedrich-Alexander-University Erlangen-Nuremberg, Klinikum Bayreuth, Bayreuth, Germany
10. Mayo Clinic, Scottsdale, AZ
11. University of Chicago Medical Center, Chicago, IL
12. UCLA Medical Center, Los Angeles
13. Department of Pathology, University of California, San Francisco, CA
14. Department of Pathology, University of Michigan, Ann Arbor, MI
15. University of Texas Southwestern Medical Center, Dallas, TX
16. University of Utah Health Sciences Center and ARUP Labs, Salt Lake City, UT