Common, low-frequency, rare, and ultra-rare coding variants contribute to COVID-19 severity ανά Fallerini, C, Picchiotti, N, Baldassarri, M, Zguro, K, Daga, S, Fava, F, Benetti, E, Amitrano, S, Bruttini, M, Palmieri, M, Croci, S, Lista, M, Beligni, G, Valentino, F, Meloni, I, Tanfoni, M, Minnai, F, Colombo, F, Cabri, E, Fratelli, M, Gabbi, C, Mantovani, S, Frullanti, E, Gori, M, Crawley, FP, Butler-Laporte, G, Richards, B, Zeberg, H, Lipcsey, M, Hultström, M, Ludwig, KU, Schulte, EC, Pairo-Castineira, E, Baillie, JK, Schmidt, A, Frithiof, R, Mari, F, Renieri, A, Furini, S, Nichol, A