van den Dobbelsteen, GPJMrivmvan Dijken, HHrivmPillai, Svan Alphen, L2025-03-192025-03-1920071702309810.1016/j.vaccine.2006.09.025https://rivm.openrepository.com/handle/10029/642228Immunogenicity of a combination vaccine containing pneumococcal conjugates and meningococcal PorA OMVsArticleVaccine 2007; 25(13):2491-62025-03-19