COVID-19 vaccine post-introduction evaluation (cPIE): web annex B: cPIE questionnaire summary tables, 10 October 2023
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World Health Organization. (2023). COVID-19 vaccine post-introduction evaluation (cPIE): web annex B: cPIE questionnaire summary tables, 10 October 2023. World Health Organization. https://iris.who.int/handle/10665/373295. License: CC BY-NC-SA 3.0 IGO