1. Department of Biology, Institute of Molecular Health Sciences, Swiss Federal Institute of Technology ETH, Otto-Stern Weg 7, CH-8093 Zurich, Switzerland
2. Department of Pathology and Molecular Pathology, University of Zurich and University Hospital Zurich, Rämistrasse 100, CH-8091 Zurich, Switzerland
3. Department of Biology, Université de Fribourg, Chemin du Musée 10, CH-1700 Fribourg, Switzerland
4. Department of Clinical Chemistry and Laboratory Medicine, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, DE-93053 Regensburg, Germany