[1] Univ Groningen, Dept Med Physiol, NL-9712 KZ Groningen, Netherlands
[2] Novartis Pharma, NS Res, CH-4002 Basel, Switzerland
[3] Univ Florida, Dept Neurosci, Gainesville, FL 32610 USA
[4] Univ Calif San Francisco, Gladstone Mol Neurobiol Program, San Francisco, CA 94141 USA
[5] Univ Calif San Francisco, Dept Neurol, San Francisco, CA 94141 USA
[6] Univ Freiburg, Dept Psychiat, D-79104 Freiburg, Germany