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Onset of idiopathic pulmonary fibrosis (IPF) usually occurs between the ages of 50 and 70 years, but the mean age in this population of patients with IPF was 61.4 years (n = 238, age range 27–79 years). Data from cohort of patients enrolled between 1982 and 1996 in the Specialized Center of Research Study at the National Jewish Medical and Research Center. Reproduced with permission from the American College of Chest Physicians (246).
