1. Université Paris Cité, CNRS, Institut Jacques Monod, F-75013 Paris, France.
2. Programme Équipe Labellisée Ligue contre le Cancer, Paris, France.
3. Andalusian Center for Developmental Biology (CABD), CSIC/JA/Universidad Pablo de Olavide, Seville, Spain.
4. HHMI and Department of Molecular Biology and Genetics, Johns Hopkins University School of Medicine, Baltimore, MD, USA.