1. Center for Nuclear Receptors and Cell Signaling (K.E., A.S., P.J., J.-A.G., C.W.), Department of Biology and Biochemistry, University of Houston, Houston, Texas 77204-5056;
2. Department of Biosciences and Nutrition (K.E., J.-A.G.), Novum, Karolinska Institutet, 141 83 Stockholm, Sweden