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Using the Indirect Cohort Design to Estimate the Effectiveness of the Seven Valent Pneumococcal Conjugate Vaccine in England and Wales
- Nick Andrews,
- Pauline A. Waight,
- Ray Borrow,
- Shamez Ladhani,
- Robert C. George,
- Mary P. E. Slack,
- Elizabeth Miller
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- Published: December 2, 2011
- https://doi.org/10.1371/journal.pone.0028435