Veterans Affairs Puget Sound Health Care System, 1660 South Columbian Way (151), Seattle, WA, 98108, USA. Division of Metabolism, Endocrinology and Nutrition, Department of Medicine, University of Washington, Seattle, WA, USA. Veterans Affairs Puget Sound Health Care System, 1660 South Columbian Way (151), Seattle, WA, 98108, USA. skahn@uw.edu. Division of Metabolism, Endocrinology and Nutrition, Department of Medicine, University of Washington, Seattle, WA, USA. skahn@uw.edu.