Affiliation: | 1. Institute for Health Research, Kaiser Permanente Colorado, Denver, Colorado;2. University of Colorado Denver, Denver, Colorado;3. Duke University Medical Center, Duke Clinical Research Institute, Durham, North Carolina;4. Stanford School of Medicine, Palo Alto, California;6. Mid America Heart Institute, Kansas City, Missouri;5. University of Missouri at Kansas City School of Medicine, Kansas City, Missouri;7. Tennessee Valley Health System VA, Nashville, Tennessee;11. Vanderbilt University Medical Center, Nashville, Tennessee |