Cite
MLA Citation
Grant A Mackenzie et al.. “Effect of the introduction of pneumococcal conjugate vaccination on invasive pneumococcal disease in The Gambia: a population-based surveillance study.” Lancet infectious diseases, vol. 16, no. 6, n.d., pp. 703–711. http://access.bl.uk/ark:/81055/vdc_100033761083.0x000008