1. Department of Foods and Nutrition, Purdue University, West Lafayette, IN 47907
2. The Donald W. Reynolds Department of Geriatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA and the Geriatric Research Education and Clinical Center, Central Arkansas Veterans Healthcare System, Little Rock, AR 72114, USA
3. The Nutrition Sciences Program, The University of Nevada Las Vegas, Las Vegas, NV 89154, USA
4. The Metabolism Unit, Shriners Burns Institute and The University of Texas Medical Branch, Galveston, TX 77550, USA