1. Fishberg Research Center in Neurobiology (S.C.S.), Mount Sinai School of Medicine, New York, New York 10029;
2. Departments of Neurology (S.C.S.), Mount Sinai School of Medicine, New York, New York 10029;
3. Physiology and Biophysics (H.W.), Mount Sinai School of Medicine, New York, New York 10029;
4. Pharmacology (H. W.), Mount Sinai School of Medicine, New York, New York 10029;
5. Medical Research Council Regulatory Peptides Unit (R.P.M.), University of Cape Town Medical School, Observatory 7925, South Africa
6. Departments of Chemical Pathology (R.P.M.), University of Cape Town Medical School, Observatory 7925, South Africa
7. Medicine (R.P.M.), University of Cape Town Medical School, Observatory 7925, South Africa