1. PRO-ADN Diagnostic, Polyservices Maisonneuve-Rosemont, Montreal, Quebec, CA.
2. Human Genetics Center, University of Texas, Houston, TX, US.
3. Centre de Recherche Guy Bernier, Hopital Maisonneuve-Rosemont, 5415 boul. de l'Assomption Montreal, Quebec, CA H1T 2M4.