1. Centre for Studies in Behavioral Neurobiology (A.A., E.C., K.B., W.G.B.), Department of Psychology, Concordia University, Montréal, Canada H4B 1R6
2. Department of Research and Development (E.F.), Radix Biosolutions, Georgetown, Texas 78626
3. Brain and Mind Research Institute (T.A.M.), Weill Medical College, Cornell University, New York, New York 10021
4. Harold and Margaret Milliken Hatch Laboratory of Neuroendocrinology (T.A.M.), The Rockefeller University, New York, New York 10065