1. Department of Paediatrics (N.H.B.), Aarhus University Hospital at Skejby, Denmark DK-8200;
2. Department of Paediatric Endocrinology (N.H.B., L.P., S.S., C.M.H., D.A.P., P.E.C.), Central Manchester and Manchester Children’s University Hospitals, Manchester, United Kingdom M27 1HA;
3. Department of Paediatric Radiology (N.B.W.), Alder Hey Children’s Hospital, Liverpool, United Kingdom L12 2AP;
4. Department of Ophthalmology (J.R.G., I.C.L.), Central Manchester and Manchester Children’s University Hospitals, Manchester, United Kingdom M13 0JH