1. From the BCNatal—Barcelona Center for Maternal-Fetal and Neonatal Medicine (Hospital Clínic and Hospital Sant Joan de Deu), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona, and Centre for Biomedical Research on Rare Diseases (CIBER-ER), Barcelona, Spain (F.C., E.S.-S., M.C.-L., J.R.-B., A.G.-T., R.G.-P., M.R.-L., E.D., E.G.); ICREA, Universitat Pompeu Fabra, Barcelona, Spain (B.B.); and Department of Cardiology, Thorax Clinic Institute, Hospital Clínic,...