Effects of CPAP and FiO2 on respiratory effort and lung stress in early COVID-19 pneumonia: a randomized, crossover study oleh Lorenzo Giosa, Patrick Duncan Collins, Martina Sciolla, Francesca Cerrone, Salvatore Di Blasi, Matteo Maria Macrì, Luca Davicco, Andrea Laguzzi, Fabiana Gorgonzola, Roberto Penso, Irene Steinberg, Massimo Muraccini, Alberto Perboni, Vincenzo Russotto, Luigi Camporota, Giacomo Bellani, Pietro Caironi