1. From the Adult Congenital Heart Centre and Centre for Pulmonary Hypertension, Royal Brompton Hospital, London, UK (G.-P.D., E.B., S.J.W., M.A.G.); National Heart and Lung Institute (G.-P.D., D.O.O., J.S.W., M.A.G., J.S.R.G., L.S.H) and Department of Experimental Medicine and Toxicology (S.v.E., O.A., M.R.W., J.W.), Imperial College London, London, UK; Julius-Maximilians-Universität, Medizinische Klinik I, Würzburg, Germany (T.T., J.B); National Pulmonary Hypertension Service, Hammersmith Hospital,...