Vermont, CLvan Dijken, HHrivmde Groot, Rvan Alphen, Lvan den Dobbelsteen, GPJMrivm2025-03-182025-03-1820041529704910.1016/j.vaccine.2004.02.014https://rivm.openrepository.com/handle/10029/640524PorA-specific differences in antibody avidity after vaccination with a hexavalent Men B outer membrane vesicle vaccine in toddlers and school childrenArticleVaccine 2004; 22:3008-132025-03-18