Efficacy and safety of seven-valent conjugate pneumococcal vaccine in American Indian children: group randomised trial.

O’Brien, K. L., Moulton, L. H., Reid, R., Weatherholtz, R., Oski, J., Brown, L., … & Chang, I. (2003). Efficacy and safety of seven-valent conjugate pneumococcal vaccine in American Indian children: group randomised trial. The Lancet362(9381), 355-361.

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