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Brugger, Silvio D.; Frey, Pascal; Aebi, Suzanne; Hinds, Jason; Mühlemann, Kathrin (2010). Multiple colonization with S. pneumoniae before and after introduction of the seven-valent conjugated pneumococcal polysaccharide vaccine. PLoS ONE, 5(7), e11638. Lawrence, Kans.: Public Library of Science 10.1371/journal.pone.0011638
