RT Journal Article SR Electronic(1) A1 Blystad, H A1 Nilsen, O A1 Berglund, T A1 Blaxhult, A A1 Aavitsland, P A1 Giesecke, J YR 2003 T1 Syphilis outbreak in Norway and Sweden among men who have sex with men 1998-2002 JF Weekly releases (1997–2007) VO 7 IS 24 SP 2241 OP DO https://doi.org/10.2807/esw.07.24.02241-en UL https://www.eurosurveillance.org/content/10.2807/esw.07.24.02241-en