Spontaneous Pneumopericardium and Pneumomediastinum in Twelve COVID-19 Patients Jorge Paul Juárez-Lloclla; Franco León-Jiménez; Juan Urquiaga-Calderón; Héctor Temoche-Nizama; Mayte Bryce-Alberti; Arianna Portmann-Baracco; Alfonso Bryce-Moncloa;

Characteristics and Risk Factors Associated With Mortality in a Multicenter Spanish Cohort of Patients With COVID-19 Pneumonia José Ramón Muñoz-Rodríguez; Francisco Javier Gómez-Romero; José Manuel Pérez-Ortiz; Pilar López-Juárez; Juan Luis Santiago; Leticia Serrano-Oviedo; Francisco Javier Redondo-Calvo;

Menor frecuencia y letalidad en mujeres y en la altura por COVID-19: dos caras de una misma moneda Roberto Alfonso Accinelli; Juan Alonso Leon-Abarca;