1. Center for Dementia Research, Nathan Kline Institute, Orangeburg, NY 10962
2. Department of Psychiatry, New York University School of Medicine, New York, NY 10016
3. Marion Bessin Liver Research Center, Albert Einstein College of Medicine, Bronx, NY 10461
4. Johnson and Johnson/Janssen Pharmaceutica, B-2340 Beerse, Belgium
5. Neurotec, Karolinska Institutet, Novum-KASPAC, SE-141 57 Huddinge, Sweden
6. Department of Cell Biology and Neuroscience, Osaka University Graduate School of Medicine, Suita 565-0871, Japan
7. McLean Hospital, Belmont, MA 02478
8. Department of Cell Biology, New York University School of Medicine, New York, NY 10016