1. Intercellular Signaling in Cardiovascular Development and Disease Laboratory, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain (L.L.-Z., B.G.F.-G., D.G., M.S.-A., J.L.d.l.P.).
2. Ciber CV, Madrid, Spain (L.L.-Z., B.G.F.-G., D.G., M.S.-A., J.L.d.l.P.).
3. Developmental Biology, Centre for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation Academy of Athens, Greece (D.G.).