1. Department of Chemical Physiology, The Scripps Research Institute, La Jolla, United States
2. Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, United States
3. Dorris Neuroscience Center, The Scripps Research Institute, La Jolla, United States
4. Department of Molecular and Cellular Neuroscience, The Scripps Research Institute, La Jolla, United States
5. Center for Molecular Medicine, University of Cologne, Cologne, Germany
6. Department of Psychiatry, Indiana University School of Medicine, Indianapolis, United States