Fetal and neonatal physiology / [edited by] Richard A. Polin, MD, William T. Speck Professor of Pediatrics, College of Physicians and Surgeons, Columbia University, Director, Division of Neonatology, Morgan Stanley Children's Hospital of New York-Presbyterian, Columbia University Medical Center, New York, New York, Steven H. Abman, MD, Professor, Department of Pediatrics, University of Colorado School of Medicine, Director, Pediatric Heart Lung Center, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora, Colorado, David H. Rowitch, MD, PhD, ScD, Professor and Head, Department of Paediatrics, Wellcome Trust - Medical Research Council Stem Cell Institute, University of Cambridge, Cambridge, United Kingdom, Adjunct Professor, Department of Pediatrics, University of California, San Francisco, San Francisco, California, William E. Benitz, MD, Philip Sunshine Professor in Neonatology, Chief, Division of Neonatal and Developmental Medicine, Stanford University School of Medicine, Director of Nurseries, Lucile Packard Children's Hospital, Palo Alto, California, William W. Fox, MD, Editor Emeritus, Attending Neonatologist, Division of Neonatology, The Children's Hospital of Philadelphia, Medical Director, Infant Breathing Disorder Center, Emeritus Professor CE of Pediatrics, Perelman School of Medicine,The University of Pennsylvania, Philadelphia, Pennsylvania.