1. Department of Medical Oncology, University Hospital Bern, Inselspital, University of Bern, Bern, Switzerland;
2. Department of Biomedical Research, University Hospital Bern, Inselspital, University of Bern, Bern, Switzerland;
3. Department of Hematology, University Hospital Bern, Inselspital, University of Bern, Bern, Switzerland;
4. Department of Infectious Diseases, University Hospital Bern, Inselspital, University of Bern, Bern, Switzerland;
5. Department of Medicine, University Hospital Bern, Inselspital, University of Bern, Bern, Switzerland;
6. Clinical Trial Unit Bern, University Hospital Bern, Inselspital, University of Bern, Bern, Switzerland