Anti-Xa activity below range is related to thrombosis in patients with severe COVID-19 Pilar Marcos-Neira; Cristian Morales-Indiano; Mariana Fernández-Caballero; Teresa Tomasa-Irriguible; Luisa Bordejé-Laguna; Víctor Ruíz-Artola;

Duration of the first prone positioning maneuver and its association with 90-day mortality in patients with acute respiratory failure due to COVID-19: A retrospective study of time terciles Alejandro González-Castro; Carmen Huertas Martín; Elena Cuenca Fito; Yhivian Peñasco; Camilo Gonzalez; Juan Carlos Rodríguez Borregán;

Incidence of venous thromboembolic disease and risk of bleeding in critically ill patients with hematologic malignancies: A retrospective study Federico C. Carini; Laveena Munshi; Igor Novitzky-Basso; Graham Dozois; Camila Heredia; Sotirios Damouras; Bruno L. Ferreyro; Sangeeta Mehta;