1. From the Department of Pediatric and Adolescents Medicine, Akershus University Hospital, Lørenskog, Norway (L.S.)
2. MRC Lifecourse Epidemiology Unit, University of Southampton, United Kingdom (L.S., P.M., S.R.C., H.M.I., K.M.G., C.C.)
3. NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, United Kingdom (H.M.I., K.M.G., C.C, M.H.)
4. Vascular Physiology Unit, Institute of Cardiovascular Science, University College London, United Kingdom (S.C., D.J.B., M.C., J.D.)
5. Institute of Developmental Sciences, University of Southampton, United Kingdom (M.H.).