Department of Anesthesiology Division of Biostatistics, University of Miami Miller School of Medicine, Miami, Florida;
Department of Anesthesiology, University of Chicago, Chicago, Illinois;
Department of Anesthesiology, University of Nebraska Medical Center, Omaha, Nebraska;
Department of Epidemiology & Public Health,Division of Biostatistics, University of Miami Miller School of Medicine, Miami, Florida;
Department of Epidemiology & Public Health,Division of Biostatistics, University of Miami Miller School of Medicine, Miami, Florida;
Department of Anesthesiology Division of Biostatistics, University of Miami Miller School of Medicine, Miami, Florida;
Department of Anesthesiology Division of Biostatistics, University of Miami Miller School of Medicine, Miami, Florida;