1. Department of Genetic Medicine and Development (C.Z., I.S., C.B., B.C., J.-L.P., P.C., S.N.), University of Geneva Medical School, 1211 Geneva 4, Switzerland
2. Center for Integrative Genomics (H.K.), University of Lausanne, Génopode, CH-1015 Lausanne, Switzerland
3. Inserm U1085-IRSET (B.J., F.C.), Université de Rennes 1, Campus de Beaulieu, F-35042 Rennes, France