1. Effect of a test-and-treat approach to vitamin D supplementation on risk of all cause acute respiratory tract infection and covid-19: phase 3 randomised controlled trial (CORONAVIT). (7th September 2022) Authors: Jolliffe, David A; Holt, Hayley; Greenig, Matthew; Talaei, Mohammad; Perdek, Natalia; Pfeffer, Paul; Vivaldi, Giulia; Maltby, Sheena; Symons, Jane; Barlow, Nicola L; Normandale, Alexa; Garcha, Rajvinder; Richter, Alex G; Faustini, Sian E; Orton, Christopher; Ford, David; Lyons, Ronan A; Davies, G... Journal: BMJ Issue: Volume 378(2022) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗