1. William S. Middleton Memorial Veterans Hospital Madison WI USA
2. Department of Surgery University of Wisconsin Madison WI USA
3. Craig Hospital Englewood CO USA
4. Department of Family and Preventive Medicine Rush University Medical Center Chicago IL USA
5. School of Nursing Duke University Durham NC USA
6. Duke Lifestyle and Weight Management Center and Department of Medicine Duke University Durham NC USA
7. Department of Biostatistics and Bioinformatics Duke University School of Medicine Durham NC USA
8. Durham VA Medical Center Durham NC USA