Pedro A. de Alarcón, is William H. Albers Professor and Head, Department of Pediatrics, University of Illinois College of Medicine, Peoria, IL, USA. Eric J. Werner is Professor of Pediatrics at the Eastern Virginia Medical School and Division Director of the Division of Pediatric Hematology/Oncology, Children’s Hospital of the King’s Daughters, Norfolk, VA, USA. Robert D. Christensen is Director of Neonatology Research at Intermountain Healthcare and Professor of Pediatrics, University of Utah HEALTH, Salt Lake City, UT, USA. Martha C. Sola-Visner is Director of the Newborn Medicine Clinical Research Program at Boston Children’s Hospital and Associate Professor of Pediatrics, Harvard Medical School, Boston, MA, USA.