The impact of supplementary immunization activities on routine vaccination coverage: An instrumental variable analysis in five low-income countries

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PLoS One
http://www.plosone.org/
[Accessed 16 Feb 2019]

The impact of supplementary immunization activities on routine vaccination coverage: An instrumental variable analysis in five low-income countries
Averi Chakrabarti, Karen A. Grépin, Stéphane Helleringer
Research Article | published 14 Feb 2019 PLOS ONE
https://doi.org/10.1371/journal.pone.0212049