1. Section of Molecular Microbiology, BioCentrum-DTU, Building 301, Technical University of Denmark, DK-2800, Kgs. Lyngby, Denmark
2. Lehrstuhl für Mikrobiologie, Technische Universität München, Am Hochanger 4, D-85350 Freising, Germany
3. Danish Institute for Fisheries Research, Department of Seafood Research, Building 221, c/o Technical University of Denmark, DK-2800, Kgs. Lyngby, Denmark