Blakney Anna K, McKay Paul F
University of British Columbia, Michael Smith Laboratories, Vancouver, BC V6S 0K3, Canada.
Department of Infectious Disease, Imperial College London, London, UK.
Lancet. 2021 Feb 20;397(10275):643-645. doi: 10.1016/S0140-6736(21)00258-0. Epub 2021 Jan 29.