1. Department of Preventive Medicine and Public Health, University of Kansas Medical Center, Kansas City, Missouri
2. Department of Biostatistics, University of Kansas Medical Center, Kansas City, Missouri
3. Department of Cardiology, University of Kansas Medical Center, Kansas City, Missouri
4. Department of Pulmonary and Critical Care Medicine, University of Kansas Medical Center, Kansas City, Missouri
5. Department of Internal Medicine, University of Missouri-Kansas City, Kansas City, Missouri