1. Department of Gastroenterology and Hepatology University Hospital Zurich Zurich Switzerland
2. Division of Gastroenterology and Hepatology University Hospital Lausanne – Centre Hopitalier Universitaire Vaudois (CHUV) Lausanne Switzerland
3. Institute of Pharmacology University of Bern Bern Switzerland
4. Department of Dermatology, Inselspital Bern University Hospital University of Bern Bern Switzerland
5. Division of Pathology Cincinnati Children`s Hospital Medical Center Cincinnati Ohio USA
6. Pathology Viollier AG Basel Switzerland
7. Mount Sinai Center for Eosinophilic Disorders Icahn School of Medicine at Mount Sinai New York New York USA
8. Division of Gastroenterology and Hepatology UNC Hospital Chapel Hill North Carolina USA
9. Department of Pediatrics Gastrointestinal Eosinophilic Diseases Program Digestive Health Institute Children’s Hospital Colorado University of Colorado School of Medicine Aurora Colorado USA
10. Division of Gastroenterology and Hepatology Northwestern University Chicago Illinois USA
11. Division of Gastroenterology Scripps Clinic La Jolla California USA
12. Insitute of Social and Preventive Medicine University of Bern Bern Switzerland
13. Institute of Biochemistry Brandenburg Medical School Neuruppin Germany
14. Department of Clinical Immunology and Allergology Sechenov University Moscow Russia
15. Laboratory of Molecular Immunology Institute of Fundamental Medicine and Biology Kazan Federal University Kazan Russia