1. M. Fainzilber, Laboratory of Molecular Neurobiology, Department of Neuroscience, Karolinska Institute, Berzelius Laboratories Building, Doktorsringen 12A, S-17177 Stockholm, Sweden, and Graduate School Neurosciences Amsterdam, Institute of Neuroscience, Vrije Universiteit, de Boelelaan 1087, 1081 HV Amsterdam, Netherlands.
2. A. B. Smit, R. C. van der Schors, C. Jiménez, K. W. Li, J. van Minnen, W. P. M. Geraerts, Graduate School Neurosciences Amsterdam, Institute of Neuroscience, Vrije Universiteit, de Boelelaan 1087, 1081 HV Amsterdam, Netherlands.
3. N. I. Syed, W. C. Wildering, P. M. Hermann, A. G. M. Bulloch, Neuroscience Research Group, University of Calgary, 3330 Hospital Drive, Calgary, Alberta T2N 4N1, Canada.
4. C. F. Ibáñez, Laboratory of Molecular Neurobiology, Department of Neuroscience, Karolinska Institute, Berzelius Laboratories Building, Doktorsringen 12A, S-17177 Stockholm, Sweden.