Author Affiliations: Department of Medicine, Divi- sions of Endocrinology and Metabolism (Dr Singh) and General Internal Medicine and Infectious Diseases (Dr Lipsky),Veterans Affairs Puget Sound Healthcare Sys- tem and University of Washington School of Medi- cine, Seattle (Drs Singh and Lipsky); and Center for Lower Extremity Ambulatory Research, Dr William M. Scholl College of Podiatric Medicine, Rosalind Fran- klin University of Medicine and Science, Chicago, Ill (Dr Armstrong).