RT Book, Section A1 Stillwell, Paul A1 DeBoer, Emily M. A1 Hoppe, Jordana A1 Houin, Paul A2 Bunik, Maya A2 Levin, Myron J. A2 Abzug, Mark J. A2 Schreiner, Teri L. SR Print(0) ID 1211979872 T1 Respiratory Tract & Mediastinum T2 Current Diagnosis & Treatment: Pediatrics, 27th Edition YR 2025 FD 2025 PB McGraw Hill PP New York, NY SN 9781265739898 LK accessmedicine.mhmedical.com/content.aspx?aid=1211979872 RD 2025/03/18 AB Pulmonary diseases account for almost 50% of deaths in children younger than 1 year and about 20% of all hospitalizations of children younger than 15 years. Approximately 7% of children have a chronic respiratory disorder. Understanding the pathophysiology of many pediatric pulmonary diseases is enhanced by an appreciation of the normal growth and development of the lung.