Covid-19: Pfizer asks US regulator to authorise fourth vaccine dose for over 65s. Tanne JH. BMJ 2022;376:o711.

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Amedeo Smart

Independent Medical Education

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Tanne JH. Covid-19: Pfizer asks US regulator to authorise fourth vaccine dose for over 65s. BMJ 2022;376:o711.
PMID: 35301233