TY - CHAP M1 - Book, Section TI - Aging of the Respiratory System A1 - Campbell, Edward J. A1 - Kliment, Corrine R. A2 - Grippi, Michael A. A2 - Antin-Ozerkis, Danielle E. A2 - Dela Cruz, Charles S. A2 - Kotloff, Robert M. A2 - Kotton, Camille Nelson A2 - Pack, Allan I. Y1 - 2023 N1 - T2 - Fishman’s Pulmonary Diseases and Disorders, 6e AB - The fastest growing segment of the U.S. population consists of individuals of age 65 and older. In the 2020 census, this segment comprised 57.8 million individuals or 17% of the population. Since the 1950s, the median age of the U.S. population has increased by 20 years. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2025/03/18 UR - accessmedicine.mhmedical.com/content.aspx?aid=1207825930 ER -