Azithromycin for community treatment of suspected COVID-19 in people at increased risk of an adverse clinical course in the UK (PRINCIPLE): a randomised, controlled, open-label, adaptive platform trial. - Butler, Christopher C.; Dorward, Jienchi; Ly-Mee Yu; Gbinigie, Oghenekome; Hayward, Gail; Saville, Benjamin R.; Van Hecke, Oliver; Berry, Nick; Detry, Michelle; Saunders, Christina; Fitzgerald, Mark; Harris, Victoria; et al. (Lancet, 2021)