title: Variability of FEV1 and criterion for acute pulmonary exacerbation.
authors.affiliation: Institute for Quantitative Biology, East Tennessee State University , Johnson City, TN , USA.
authors.forename: Bradlee A
authors.initials: BA
authors.lastname: Jenkins
authors.affiliation: Institute for Quantitative Biology, East Tennessee State University , Johnson City, TN , USA.
authors.forename: Loyd Lee
authors.initials: LL
authors.lastname: Glenn
keywords: Pseudomonas aeruginosa; adolescents; cystic fibrosis; epidemiology; functional expiratory volume; prognosis; pulmonary; spirometry