Characteristics and risk factors associated with mortality during the first cycle of prone secondary to ARDS due to SARS-CoV-2 pneumonia Cecilia Gonzalez; Gabriel Musso; Jesica Rodriguez Louzan; Juan Manuel Dominguez; Celeste Gomez; Gabriel Appendino; Analía Abaca; Lucio Clemente; Diana Latasa; Martin Manago; Carlos Lovesio; Elisa Estenssoro;