Diagnostic performance of GENEDIA W and ActiveXpress+ COVID-19 antigens tests among symptomatic individuals in Peru and The United Kingdom by Palomino-Padilla, S, Finch, L, de Vos, M, Savage, H, Villa-Castillo, L, Hayward, G, Cook, E, LSTM diagnostics group, UTB-IMTAvH group, CONDOR steering group, Escadafal, C, Body, R, Adams, ER, Ugarte-Gil, C, Cubas-Atienzar, AI