1. Université Laval, Centre de Recherche de l’Hôpital Laval, Pavillon Marguerite d’Youville, local Y3130 2725, chemin Ste-Foy, Québec, G1V 4G5, Canada Tex.: , Fax.: ,
2. Dalhousie University, Department of Biochemistry & Molecular Biology, Room 9C, Sir Charles Tupper Medical Building, 5850 College Street, Halifax; Nova Scotia, B3H 1X5, Canada Tex.: , Fax.: ,