| Authors: |
Havdal LB; Department of Paediatric and Adolescent Medicine, Akershus University Hospital, Postboks 1000, 1478 Lørenskog, Norway; Norwegian Institute of Public Health, PO BOX 222 Skøyen, 0213, Oslo, Norway. Electronic address: l.b.havdal@medisin.uio.no., Bøås H; Norwegian Institute of Public Health, PO BOX 222 Skøyen, 0213, Oslo, Norway., Bekkevold T; Norwegian Institute of Public Health, PO BOX 222 Skøyen, 0213, Oslo, Norway., Kran AB; Norwegian Institute of Public Health, PO BOX 222 Skøyen, 0213, Oslo, Norway; Department of Microbiology, Oslo University Hospital, Ullevål, Postboks 4950 Nydalen, 0424 Oslo, Norway., Rojahn AE; Division of Paediatric and Adolescent Medicine, Oslo University Hospital, Ullevål, Postboks, 4950 Nydalen, 0424 Oslo, Norway., Størdal K; Department of Paediatrics, Østfold Hospital, Kalnes, Postboks 300, 1714 Grålum, Norway; Division of Paediatric and Adolescent Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway., Debes S; Department of Medical Microbiology, Østfold Hospital, Kalnes, Postboks 300, 1714 Grålum, Norway., Døllner H; Department of Paediatrics, St. Olavs University Hospital, Postboks 3250 Torgarden, 7006 Trondheim, Norway; Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Norway., Nordbø SA; Department of Medical Microbiology, St. Olavs University Hospital, Postboks 3250 Torgarden, 7006 Trondheim, Norway; Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Norway., Barstad B; Department of Paediatric and adolescent Medicine, Stavanger University Hospital, Postboks 8100, 4068 Stavanger, Norway., Haarr E; Department of Medical Microbiology, Stavanger University Hospital, Postboks 8100, 4068 Stavanger, Norway., Fernández LV; Norwegian Institute of Public Health, PO BOX 222 Skøyen, 0213, Oslo, Norway., Nakstad B; Department of Paediatric and Adolescent Medicine, Akershus University Hospital, Postboks 1000, 1478 Lørenskog, Norway; Division of Paediatric and Adolescent Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway., Inchley C; Department of Paediatric and Adolescent Medicine, Akershus University Hospital, Postboks 1000, 1478 Lørenskog, Norway., Flem E; Norwegian Institute of Public Health, PO BOX 222 Skøyen, 0213, Oslo, Norway. |