1. J. A. DeSève Laboratories of Biochemical, Montreal, QC H2W 1R7, Canada
2. J. A. DeSève Laboratories of Molecular Neuroendocrinology, Montreal, QC H2W 1R7, Canada
3. Department of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, 3801 University Ave., Montreal, QC H3A 2B4, Canada
4. Laboratory of Neuropeptide Structure and Metabolism, Clinical Research Institute of Montreal, University of Montreal, 110 Pine Ave. West, Montreal, QC H2W 1R7, Canada