1. Institute of Pathology; ASST Spedali Civili di Brescia; Brescia Italy
2. Department of Molecular and Translational Medicine; University of Brescia; Brescia Italy
3. Unit of Hygiene, Epidemiology and Public Health; University of Brescia; Brescia Italy
4. University Federico II; Naples Italy
5. The Medical University of Warsaw; Warsaw Poland
6. Coeliac Disease Center; Heim Pál Children's Hospital; Budapest Hungary
7. Children's Hospital; University of Munich Medical Centre; Munich Germany
8. Children's Hospital; University of Zagreb Medical School; Zagreb Croatia
9. Servicio de Patología. Hospital Universitari de Sant Joan de Reus; Taragona Spain
10. La Paz University Hospital; IdiPAZ; Madrid Spain
11. La Fe University Hospital; Valencia Spain
12. Schneider Children's Medical Center; Sackler Faculty of Medicine; Tel-Aviv University; Tel Aviv Israel
13. Leiden University Medical Center; Leiden The Netherlands