1. Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA
2. Department of Medicine, Division of Allergy and Clinical Immunology, Brigham and Women’s Hospital, Harvard Medical School, Boston
3. Department of Allergology, University Medical Center, Groningen Research Institute Asthma and COPD, University of Groningen, Groningen, the Netherlands
4. Institute of Allergology, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin
5. Fraunhofer Institute for Translational Medicine and Pharmacology, Allergology and Immunology, Berlin
6. Division of Allergy, Department of Dermatology, University Hospital Basel and University of Basel, Basel, Switzerland
7. Department of Biomedicine, University Hospital Basel and University of Basel, Basel, Switzerland
8. Department of Dermatology and Allergy Centre, Odense University Hospital, Odense, Denmark
9. Associated Regional and University Pathologists, Inc. Laboratories, Department of Pathology, University of Utah School of Medicine, Salt Lake City
10. Department of Oncology, Hematology, Hemostaseology, and Stem Cell Transplantation, University Hospital Aachen, Medical Faculty, Rheinisch-Westfälische Technische Hochschule Aachen University, Aachen, Germany
11. Center for Integrated Oncology, Aachen, Bonn, Cologne, Düsseldorf (ABCD), Aachen, Germany
12. Institute of Mastocytosis Studies of Castilla-La Mancha, Virgen del Valle Hospital, Toledo, Spain
13. Guy’s & St. Thomas’ National Health Service Foundation Trust, London
14. Huntsman Cancer Institute, University of Utah, Salt Lake City
15. Department of Dermatology, Centre of Reference for Mastocytosis, Toulouse University Hospital, Toulouse, France
16. Department of Immunology, Allergology and Rheumatology, University of Antwerp and Antwerp University Hospital, Antwerp, Belgium
17. Department of Medicine, Columbia University Medical Center, New York
18. Department of Internal Medicine and Immunology, Erasmus Medical Center, Rotterdam, the Netherlands
19. Department of Medicine, University of Calgary, Calgary, AB, Canada
20. Department of Hematology, Oslo University Hospital, Oslo
21. Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
22. Division of Allergic Diseases, Mayo Clinic, Rochester, MN
23. Unit of Dermatology, Centre of Reference for Mastocytosis, Pitié-Salpêtrière Hospital, Assistance Publique–Hôpitaux de Paris, Sorbonne Université, Paris
24. Department of Internal Medicine, Division of Hematology, Oncology and Cell Therapy, Section of Bone Marrow Transplantation and Cellular Therapy, Rush Medical College, Chicago
25. Virginia Commonwealth University, Richmond, VA
26. Department of Oncology, Hematology, and Bone Marrow Transplantation with Section of Pneumology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
27. Department of Medicine, Division of Clinical Immunology and Allergy, St. Michael’s Hospital, University of Toronto, Toronto
28. Department of Leukemia, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston
29. Dana-Farber Cancer Institute, Boston
30. Department of Medicine, Duke University School of Medicine, Durham, NC
31. Department of Medicine, University of Alabama at Birmingham, Birmingham, AL
32. Division of Allergy and Clinical Immunology, University of Salerno, Salerno, Italy
33. Allergy Unit and Asthma Center, Azienda Ospedaliera Universitaria Integrata di Verona, Verona, Italy
34. The Beatson West of Scotland Cancer Centre, Glasgow, Scotland
35. The Clatterbridge Cancer Centre, Bebington, Wirral, United Kingdom
36. Siteman Cancer Center at Barnes-Jewish Hospital and Washington University School of Medicine, Washington University, St. Louis
37. Oberärztin Hämatologie/Onkologie bei Uksh Campus Lübeck, Universitätsklinikum Schleswig-Holstein, Universität zu Lübeck, Lübeck, Schleswig-Holstein, Germany
38. Department of Medicine, Huddinge (H7), Karolinska University Hospitale, Stockholm
39. Hospital UniversitariVall d’Hebron, Institut de Recerca Vall d’Hebron (VHIR), Barcelona
40. University of Alberta, Edmonton, AB, Canada
41. Department of Malignant Hematology, H. Lee Moffitt Cancer Center, Tampa, FL
42. Division of Hematology and Medical Oncology, Mayo Clinic, Phoenix, AZ
43. Division of Pediatric Allergy, Immunology and Rheumatology, Department of Pediatrics, University Hospitals Rainbow Babies and Children’s Hospital, Case Western Reserve University School of Medicine, Cleveland
44. Service de Dermatologie et de cancérologie cutanée, Assistance Publique–Hopitaux de Marseille, Aix-Marseille Université, Marseille, France
45. Department of Hematology, Uppsala University Hospital and Department of Immunology, Genetics and Pathology, Uppsala, Sweden
46. Division of Allergy and Clinical Immunology, Brigham and Women’s Hospital, Boston
47. Blueprint Medicines Corporation, Cambridge, MA
48. University of Michigan, Ann Arbor, MI