Department of Infectious Diseases and Pathobiology,Vetsuisse Faculty,University of Bern,CH-3012 Bern,Switzerland;
Department of Infectious Diseases and Pathobiology,Vetsuisse Faculty,University of Bern,CH-3012 Bern,Switzerland;
Department of Infectious Diseases and Pathobiology,Vetsuisse Faculty,University of Bern,CH-3012 Bern,Switzerland;
Department of Infectious Diseases and Pathobiology,Vetsuisse Faculty,University of Bern,CH-3012 Bern,Switzerland;