1. Office of the Medical Directorate, University Hospital of Zürich, Zürich, Switzerland
2. Department of Pathology, University Hospital of Zürich, Zürich, Switzerland
3. Department of Hematology, Kantonsspital Münsterlingen, Münsterlingen, Switzerland
4. Division of Hematology, University Hospital of Zürich, Zürich, Switzerland
5. Department of Dermatology, University Hospital of Zürich, Zürich, Switzerland