Savoirs
Comparison of the variability of the annual rates of change in FEV1 determined from serial measurements of the pre- versus post-bronchodilator FEV1 over 5 years in mild to moderate COPD: Results of the lung health study
Tashkin, Wang He-Jing, Halpin David, Kleerup, Connett John, Li Ning, Elashoff, Elashoff Robert