Departments of Intensive Care Medicine and Epidemiology, Hospital de Sant Pau; Department of Intensive Care Medicine, Respiratory Unit, Hospital Clínic, Institut d'Investigacions Biomèdics August Pi i Sunyer, Barcelona; Department of Intensive Care Medicine, Hospital de Sabadell, Institut Universitari Fundació Parc Taulí, Sabadell; Hospital General de Mallorca, Palma de Mallorca; Department of Intensive Care Medicine, Fundación Hospital de Alcorcón, Alcorcón; Department of Intensive Care Medicine, Clínica San Miguel, Pamplona; Department of Intensive Care Medicine, Hospital de Granollers, Granollers; Department of Intensive Care Medicine, Hospital Germans Trias i Pujol, Badalona; Department of Intensive Care Medicine, Hospital de Sant Joan, Reus; Department of Intensive Care Medicine, Hospital Virgen de las Nieves, Granada; Department of Intensive Care Medicine, Centre Hospitalari de Manresa, Manresa; Department of Intensive Care Medicine, Hospital Josep Trueta, Girona, Spain; Department of Intensive Care Medicine, Instituto Nacional de Ciencias Médicas y de la Nutrición Salvador Zubirán, Mexico Distrito Federal, Mexico; and Denver Health Medical Center, and Department of Medicine, University of Colorado Health Sciences Center, Denver, Colorado
