Affiliation: | 1. Department of Medicine, University of Texas Southwestern, Dallas, Texas, USA;2. Rocky Mountain Regional VA Medical Center, Denver, Colorado, USA;3. Rocky Mountain Regional VA Medical Center, Denver, Colorado, USA University of Colorado School of Medicine, Denver, Colorado, USA;4. Department of Biostatistics and Informatics, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA;5. Brigham and Women's Hospital, Boston, Massachusetts, USA |