Global citimpact: 6.97 Researcher at Metabolism Unit, Shriners Hospitals for Children, 815, Market Street, Galveston, TX 77550, ; Department of Surgery, University of Texas Medical Branch, 301 University Blvd, Galveston, TX 77555, ; Arkansas Children's Nutrition Center, Arkansas Children's Hospital Research Institute, and Dept. of Pediatrics, University of Arkansas for Medical Sciences, 15 Children's Way, Little Rock, AR 72202, . Electronic address: .