Federal health regulators cautioned that data was limited and that they had to rely on Johnson & Johnson's own analysis for some of the study findings, rather than conducting their own.
J&J Booster Dose Bolsters Protection Against Covid-19, FDA Says
Wall Street Journal - 13 Oct 2021 17:10
Federal health regulators cautioned that data was limited and that they had to rely on Johnson & Johnson's own analysis for some of the study findings, rather than conducting their own.
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