1. Department of Gastroenterology and Hepatology University Hospital Zurich Zurich Switzerland
2. Institute of Social and Preventive Medicine University of Bern Bern Switzerland
3. Pathology Viollier AG Basel Switzerland
4. Center for Gastroenterology and Hepatology Zurich Switzerland
5. Division of Gastroenterology and Hepatology University Hospital Lausanne – Centre Hopitalier Universitaire Vaudois (CHUV) Lausanne Switzerland
6. Mount Sinai Center for Eosinophilic Disorders Icahn School of Medicine at Mount Sinai New York New York USA
7. Institute of Biochemistry Medical School Brandenburg Neuruppin Germany
8. Institute of Pharmacology University of Bern Bern Switzerland