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Time frame for data collection lasts from 4 March 2021 to the end of the national vaccination campaign. The collection timeframe for data included in this analysis was from 4 March to 8 April 2021. Data collection is carried out through the administration of a questionnaire with three different approaches: face-to-face interviews at vaccination sites, telephone interviews, and online access to the e-questionnaire which can be accessed either by QR-code scanning or through a link sent via e-mail.
Copyright and License information: ©2021 The Author(s)
This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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