International pediatric COVID-19 severity over the course of the pandemic by Zhu, Y, Almeida, FJ, Baillie, JK, Bowen, AC, Britton, PN, Brizuela, ME, Buonsenso, D, Burgner, D, Chew, KY, Chokephaibulkit, K, Cohen, C, Cormier, SA, Crawford, N, Curtis, N, Farias, CGA, Gilks, CF, von Gottberg, A, Hamer, D, Jarovsky, D, Jassat, W, Jesus, AR, Kemp, LS, Khumcha, B, McCallum, G, Miller, JE, Morello, R, Munro, APS, Openshaw, PJM, Padmanabhan, S, Phongsamart, W, Reubenson, G, Ritz, N, Rodrigues, F, Rungmaitree, S, Russell, F, Sáfadi, MAP, Saner, C, Semple, MG, Prado da Silva, DGB, de Sousa, LMM, Diogo Moço Souza, M, Spann, K, Walaza, S, Wolter, N, Xia, Y, Yeoh, DK, Zar, HJ, Zimmermann, P, Short, KR, Alex, B, Horby, PW

Other Authors: “…International Severe Acute Respiratory Infection Consortium (ISARIC4C) group…”