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Prevention of covid-19 and other acute respiratory infections with cod liver oil supplementation, a low dose vitamin D supplement: quadruple blinded, randomised placebo controlled trial.

Sonja H BrunvollAnders B NygaardMerete Ellingjord-DalePetter HollandMette Stausland IstreKarl Trygve KallebergCamilla Lund SøraasKirsten B HolvenStine M UlvenAnette HjartåkerTrond HaiderFridtjof Lund-JohansenJohn Arne DahlHaakon E MeyerArne Søraas
Published in: BMJ (Clinical research ed.) (2022)
ClinicalTrials.gov NCT04609423.
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