RT Journal Article SR Electronic(1) A1 Hasseltvedt, V A1 Høiby, E A YR 2001 T1 Systemic streptococcal group B disease in Norway – an increasing health problem JF Weekly releases (1997–2007) VO 5 IS 40 SP 2086 OP DO https://doi.org/10.2807/esw.05.40.02086-en UL https://www.eurosurveillance.org/content/10.2807/esw.05.40.02086-en