Igor Barjaktarevic1, Antonio M Esquinas2, James Johannes1, David A Berlin3. 1. Division of Pulmonary and Critical Care Medicine David Geffen School of Medicine UCLA Los Angeles, California. 2. Intensive Care Unit Hospital Morales Meseguer Murcia, Spain. 3. Division of Pulmonary and Critical Care Medicine Weill Cornell Medical College Cornell University New York, New York.