1. Metabolic Research Unit (P.W., P.N., C.V., G.N.L., G.R.K., P.J.K.) University of California School of Medicine San Francisco, California 94143
2. Department of Molecular and Integrative Physiology (E.M., B.S.K.) University of Illinois Urbana, Illinois 61801
3. Department of Medical Nutrition and Biosciences (E.E., J.-A.G.) Karolinska Institute Huddinge, Sweden S-14186
4. KaroBio AB (S.N.) Novum Huddinge, Sweden S-14157