Abstract
*Department of Clinical Microbiology, Aalborg Hospital, DK-9000 Aalborg, †Department of Clinical Microbiology, Aarhus University Hospital, DK-8000 Aarhus C, ‡Danish Veterinary Laboratory, DK-1345 Kbh V, Department of Molecular and Structural Biology, Aarhus University, DK-8000 Aarhus C, ||Department of Gastrointestinal Infections and #Clinical Microbiology, Statens Serum Institut, DK-2300 Copenhagen S, Denmark
Corresponding author: Dr N. Nørskov-Lauritsen (e-mail: prof1{at}aas.nja.dk ).