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Operational Challenges in Large Clinical Trials: Examples and Lessons Learned from the Gambia Pneumococcal Vaccine Trial
- Felicity T Cutts,
- Godwin Enwere,
- Syed M. A Zaman,
- Fred G Yallop
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- Published: July 14, 2006
- https://doi.org/10.1371/journal.pctr.0010016