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Risk and protective factors for meningococcal disease in adolescents: matched cohort study
BMJ 2006; doi: https://doi.org/10.1136/bmj.38725.728472.BE (Published 10 February 2006) Cite this as: BMJ 2006;:bmj;bmj.38725.728472.BEv1This is a PDF-only article. The first page of the PDF of this article appears above.