1. Department of Operative Dentistry and Periodontology; University Hospital; LMU Munich; Munich Germany
2. Department of Epidemiology; Columbia University Mailman School of Public Health; New York NY USA
3. Department of Molecular and Cell Biology; Boston University Henry M. Goldman School of Dental Medicine; Boston MA USA
4. Celiac Disease Center; Department of Medicine; Columbia University College of Physicians and Surgeons; New York NY USA
5. Division of Epidemiology and Community Health; School of Public Health; University of Minnesota; Minnesota MN USA