Seek COVER: using a disease proxy to rapidly develop and validate a personalized risk calculator for COVID-19 outcomes in an international network by Williams, RD, Markus, AF, Yang, C, Duarte-Salles, T, DuVall, SL, Falconer, T, Jonnagaddala, J, Kim, C, Rho, Y, Williams, AE, Machado, AA, An, MH, Aragón, M, Areia, C, Burn, E, Choi, YH, Drakos, I, Abrahão, MTF, Fernández-Bertolín, S, Hripcsak, G, Kaas-Hansen, BS, Kandukuri, PL, Kors, JA, Kostka, K, Liaw, S-T, Lynch, KE, Machnicki, G, Matheny, ME, Morales, D, Nyberg, F, Park, RW, Prats-Uribe, A, Pratt, N, Rao, G, Reich, CG, Rivera, M, Seinen, T, Shoaibi, A, Spotnitz, ME, Steyerberg, EW, Suchard, MA, You, SC, Zhang, L, Zhou, L, Ryan, PB, Prieto-Alhambra, D, Reps, JM, Rijnbeek, PR