Efficacy of a pneumococcal conjugate vaccine against acute otitis media.
Eskola J; Kilpi T; Palmu A; Jokinen J; Haapakoski J; Herva E; Takala A; Käyhty H; Karma P; Kohberger R; Siber G; Mäkelä PH; The New England Journal Of Medicine, 2001, vol. 344, issue 6, p 403, ISSN 00284793. ISBN 00284793.
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