1 Department of Immunology, University Hospital Zurich, Gloriastrasse 23, 8091 Zurich, Switzerland; Faculty of Medicine, University of Zurich, Ramistrasse 71, 8006 Zurich, Switzerland. Electronic address: onur.boyman@uzh.ch.
2 Department of Rheumatology, Immunology and Allergology, University Hospital of Bern, 3010 Bern, Switzerland. Electronic address: alexander.eggel@dbmr.unibe.ch.
3 Institute of Pathology, Division of Experimental Pathology, University of Bern, 3008 Bern, Switzerland. Electronic address: mario.noti@pathology.unibe.ch.