1 KOSA Pharma GmbH, Frankfurt am Main, Germany. Wirth-Kriftel@t-online.de.
2 Institute of Medical Immunology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität Zu Berlin, and Berlin Institute of Health, Berlin, Germany. Carmen.Scheibenbogen@charite.de.
3 Experimental and Clinical Research Center, Max Delbrück Center for Molecular Medicine and Charité Universitätsmedizin Berlin, Berlin, Germany.