Acute respiratory distress syndrome due to COVID-19. Clinical and prognostic features from a medical Critical Care Unit in Valencia, Spain P. Ramírez; M. Gordón; M. Martín-Cerezuela; E. Villarreal; E. Sancho; M. Padrós; J. Frasquet; G. Leyva; I. Molina; M. Barrios; S. Gimeno; Á. Castellanos;