1. CIBER Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain (E.L., F.F.-A.).
2. Department of Pediatrics, Consorcio Hospital General, University of Valencia, Spain (E.L.). University of Milano-Bicocca, Italy (G.M.).
3. Department of Pediatric Nephrology and Hypertension, Pediatric Institute, Jagiellonian University Medical College, Kraków, Poland (D.D.).
4. Istanbul University-Cerrahpasa, Cerrahpasa School of Medicine, Turkey (S.E.).
5. University Hospital of Bellvitge, IDIBELL (F.F.-A.), University of Barcelona, Spain.
6. Department of Clinical Sciences (F.F.-A.), University of Barcelona, Spain.
7. Department of Nephrology, Kidney Transplantation and Hypertension, The Children’s Memorial Health Institute, Warsaw, Poland (M.L.).
8. Department of Paediatric Nephrology, Evelina London Children’s Hospital, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom (M.D.S.).
9. Institute of Pediatrics of Southern Switzerland, Ente Ospedaliero Cantonale, Bellinzona (G.S.).
10. First Department of Pediatrics, Aristotle University of Thessaloniki, Hippokratio General Hospital of Thessaloniki, Greece (S.S.).
11. Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, Heidelberg University Hospital, Germany (E.W.).