Affiliation: | 1.Laboratoire de Génétique Cellulaire et Développementale, Département de Médecine, Pavillon Marchand,Université Laval,Ste-Foy,Canada,G1K 7P4;2.Brigham and Women's Hospital / Harvard Medical School, Department of Medicine, Division of Genetics,Harvard Medical School New Research Building,Boston,USA |