1. Departments of Ophthalmology and
2. Biochemistry and Molecular Medicine, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada.
3. Departments of Pediatrics and
4. Pharmacology, Centre Hospitalier Universitaire Ste-Justine, University of Montreal, Montréal, Quebec H3T 1C5, Canada.
5. Institut de Recherches Cliniques de Montréal, University of Montreal, Montreal, Quebec H2W 1R7, Canada.
6. Institut National de la Santé et de la Recherche Médicale, U 968 Paris F-75012, France.
7. Department of Pharmacology and Therapeutics, McGill University, Montreal, Quebec H3A 2B4, Canada.
8. Department of Medicine, Maisonneuve-Rosemont Hospital Research Centre, University of Montreal, Montreal, Quebec H1T 2M4, Canada.
9. Department of Neurology-Neurosurgery, McGill University, Montreal, Quebec H3A 2B4, Canada.