1. E. Korzus, J. Torchia, E. M. McInerney, M. G. Rosenfeld, Howard Hughes Medical Institute, University of California San Diego (UCSD), 9500 Gilman Drive, La Jolla, CA 92093–0648, USA.
2. D. W. Rose and T.-M. Mullen, UCSD Department of Medicine and Whittier Diabetes Program, UCSD.
3. L. Xu, Howard Hughes Medical Institute and Biomedical Sciences Graduate Program, UCSD.
4. R. Kurokawa and C. K. Glass, Cellular and Molecular Medicine, School and Department of Medicine, UCSD.