1 Department of Vaccine Preventable Diseases, Division of Infection Control and Environmental Health, Norwegian Institute of Public Health, Postboks 222 Skøyen, Oslo 0213, Norway. Electronic address: [email protected].
2 Department of Vaccine Preventable Diseases, Division of Infection Control and Environmental Health, Norwegian Institute of Public Health, Postboks 222 Skøyen, Oslo 0213, Norway. Electronic address: [email protected].
3 Department of Vaccine Preventable Diseases, Division of Infection Control and Environmental Health, Norwegian Institute of Public Health, Postboks 222 Skøyen, Oslo 0213, Norway. Electronic address: [email protected].
6 Department of medicine, Ålesund hospital, Møre and Romsdal Hospital Trust, Postboks 1600, Ålesund 6026, Norway. Electronic address: [email protected].
7 Department of Vaccine Preventable Diseases, Division of Infection Control and Environmental Health, Norwegian Institute of Public Health, Postboks 222 Skøyen, Oslo 0213, Norway. Electronic address: [email protected].