1. Arvid Wretlind Laboratory for Metabolic Research, Department of Surgery, Karolinska Institutet at Huddinge University Hospital (U.A., J.P., J.L., C.A.), S-141 86 Huddinge, Sweden
2. Department of Biomedical Sciences, Creighton University School of Medicine (U.A., R.D.R., T.E.A.), Omaha, Nebraska 68178
3. Research Service (151), Department of Veteran Affairs Medical Center (R.D.R.), Omaha, Nebraska 68105