@article{:/content/10.2807/esw.11.05.02893-en, author = "Bergsaker, M A R and Feiring, B", title = "Introduction of pneumococcal conjugate vaccine into the Norwegian childhood vaccination programme", journal = "Weekly releases (1997–2007)", year = "2006", volume = "11", number = "5", eid = 2893, pages = "", url = "https://www.eurosurveillance.org/content/10.2807/esw.11.05.02893-en", doi = "https://doi.org/10.2807/esw.11.05.02893-en" }