Ridgeback Biotherapeutics Announces MHRA Clearance to Begin Human Testing of EIDD-2801 in the UK for COVID-19 and the Start of Phase 1 https://www.biospace.com/article/releases/ridgeback-biotherapeutics-announces-mhra-clearance-to-begin-human-testing-of-eidd-2801-in-the-uk-for-covid-19-and-the-start-of-phase-1/