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Paper recommending vitamin D for COVID-19 retracted four years after expression of concern.https://t.co/wSlgZBDGYT pic.twitter.com/4ODEaWBXYg
— Retraction Watch (@RetractionWatch) June 30, 2024
— simonthong aka kitty poo (@KittyPo80176717) June 30, 2024
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weehingthong 