Major adverse cardiovascular events (MACE) in patients with severe COVID-19 registered in the ISARIC WHO clinical characterization protocol: a prospective, multinational, observati... by Reyes, LF, Garcia-Gallo, E, Murthy, S, Fuentes, YV, Serrano, CC, Ibáñez-Prada, ED, Lee, J, Rojek, A, Citarella, BW, Gonçalves, BP, Dunning, J, Rätsep, I, Viñan-Garces, AE, Kartsonaki, C, Rello, J, Martin-Loeches, I, Shankar-Hari, M, Olliaro, PL, Merson, L