1. Center for Oral Biology, Novum, Karolinska Institutet, S-141 04 Huddinge, Sweden
2. Discovery Research, Sanofi-Aventis Deutschland GmbH, 65926 Frankfurt am Main, Germany
3. Department of Clinical Neuroscience, Section of Clinical Neurophysiology, Karolinska Institute, S-141 86 Stockholm, Sweden
4. Department of Genetics, Institute of Life Sciences and Center for Research on Pain, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
5. Department of Cell & Animal Biology, Institute of Life Sciences and Center for Research on Pain, The Hebrew University of Jerusalem, Jerusalem 91904, Israel