Characteristics and Outcomes by Ceiling of Care of Subjects Hospitalized with COVID-19 During Four Waves of the Pandemic in a Metropolitan Area: A Multicenter Cohort Study. - Pallarès, Natàlia; Tebé, Cristian; Abelenda-Alonso, Gabriela; Rombauts, Alexander; Oriol, Isabel; Simonetti, Antonella F.; Rodríguez-Molinero, Alejandro; Izquierdo, Elisenda; Díaz-Brito, Vicens; Molist, Gemma; Gómez Melis, Guadalupe; Carratalà, Jordi; et al. (Infectious Diseases & Therapy, 2023)