Mass immunization campaign in El Salvador, 1969. Evaluation of receptivity and recommendation for future campaigns.

@article{Lin1971MassIC,
  title={Mass immunization campaign in El Salvador, 1969. Evaluation of receptivity and recommendation for future campaigns.},
  author={Nan Lin and Ralph Waldo Hingson and J Allwood-Paredes},
  journal={HSMHA health reports},
  year={1971},
  volume={86 12},
  pages={1112-21}
}