1. Department of Medicine and; School of Medicine, University of Kansas; Kansas City Kansas
2. Department of Preventive Medicine; School of Medicine, University of Kansas; Kansas City Kansas
3. Department of Biostatistics; Cedars-Sinai Medical Center; Los Angeles California
4. Department of Medicine; Medical College of Wisconsin; Milwaukee Wisconsin
5. Department of Family and Community Medicine; School of Medicine; University of Missouri at Columbia; Columbia Missouri
6. Department of Biostatistics; School of Medicine, University of Kansas; Kansas City Kansas