1. Department of Molecular Mechanisms of Disease, Vetsuisse Faculty and Faculty of Science, University of Zurich, Winterthurerstrasse 190, Zurich 8057, Switzerland
2. Department of Farm Animals, Division of Swine Medicine, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, Zurich 8057, Switzerland
3. Malcisbo AG, Wagistrasse 27A, Schlieren 8952, Switzerland