Incidence and immunomic features of apyretic COVID-19 in patients affected by solid tumors: a prospective cohort study oleh Francesco Ravera, Roberto Borea, Gabriella Cirmena, Martina Dameri, Lorenzo Ferrando, Maurizio Gallo, Cecilia Casini, Neri Fallani, Mario Stabile, Valentina Barbero, Roberto Murialdo, Lucia Tixi, Margherita Cappuccio, Andrea Cuboni, Irene Sivieri, Giuseppe Fornarini, Andrea De Maria, Alberto Ballestrero, Gabriele Zoppoli