1. Lung Center, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
2. Division of Infectious Diseases and Hospital Epidemiology, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
3. Center for Dermatooncology, Department of Dermatology, Eberhard Karls University Tübingen, Tübingen, Germany
4. Institute of Immunobiology, Cantonal Hospital St.Gallen, St.Gallen, Switzerland
5. Institute of Pathology, Cantonal Hospital St.Gallen, St.Gallen, Switzerland
6. Department of Medical Oncology and Comprehensive Cancer Center, University Hospital of Basel, Basel, Switzerland
7. Department of Medical Oncology and Hematology, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
8. Department of Medical Oncology, University Hospital Bern, Bern, Switzerland