1. Department of Microbiology, University of Barcelona, Diagonal 645, 08028 Barcelona, Catalonia, Spain
2. Departamento de Lenguajes y Sistemas Informáticos, Universitat Politècnica de Catalunya, Jordi Girona 1–3, Mòdul C6 (Campus Nord), 08034 Barcelona, Spain
3. Environment & Public Health Research Unit, School of the Environment, University of Brighton, Cockcroft Building, Lewes Road, Brighton BN2 4GJ, UK
4. Laboratoire de Virologie du Milieu Hydrique, Faculté de Pharmacie, Université de Nancy I, 5 rue Albert Lebrun, 54000 Nancy, France
5. Water and Environmental Microbiology, SMI, Swedish Institute for Infectious Disease Control, SE 171, 82 Solna, Sweden
6. State General Laboratory, Microbiological Section, Kimonos 44, 1451 Nicosia, Cyprus
7. Microbiology and Tumor Biology Center, Karolinska Institute, Box 280, S-171 77, Stockholm, Sweden