1. From the National Center for Inherited Metabolic Disorders (S.Y., P.M.H., E.R.N.), The Children’s Hospital, Dublin, Ireland; Department of General Internal Medicine (G.H.J.B.), University Hospital Nijmegen, The Netherlands; The Children’s Hospital at Westmead (B.W.), Sydney, Australia; University of New South Wales (D.E.L.W.), Department of Cardiovascular Medicine, Prince of Wales Hospital, Randwick, Sydney, Australia; Postgraduate Center (D.P.B.), Middlesex Hospital, London, UK; The National...