1. Department of Cardiovascular Surgery, Inselspital; University Hospital Bern, University of Bern; Bern Switzerland
2. Clinical Trials Unit, Inselspital; University Hospital Bern, University of Bern; Bern Switzerland
3. Department for Biomedical Research, Inselspital; University Hospital Bern, University of Bern; Bern Switzerland
4. Department of Anesthesiology and Pain Therapy, Inselspital; University Hospital Bern, University of Bern; Bern Switzerland