Institut Curie, Paris, France, INSERM U900, Paris, France, Mines ParisTech, Fontainebleau, France.|Institut Curie, Paris, France, INSERM U900, Paris, France, Mines ParisTech, Fontainebleau, France.|Division of Genetics & Genomics, The Roslin Institute, The University of Edinburgh, Easter Bush, Midlothian, United Kingdom.