Field evaluation of vaccine efficacy.
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Citation
Orenstein, W. A., Bernier, R. H., Dondero, T. J., Hinman, A. R., Marks, J. S. et al. (1985). Field evaluation of vaccine efficacy.. Bulletin of the World Health Organization, 63 (6), 1055 - 1068. World Health Organization. https://iris.who.int/handle/10665/265195