1 American Thoracic Society, "Standards for the diagnosis and treatment of patients with chronic obstructive pulmonary disease" American Thoracic Society June2004
2 American Thoracic Society, "Standardization of Spirometry:1994 update" 152 : 1107-1136, 1995
3 Morris JF, "Spirometric standards for healthy nonsmoking adults" 103 : 57-67, 1971
4 Gold WM, "Pulmonary function testing" 781-881, 2000
5 Choi JK, "Normal predictive values of spirometry for Korean population" 58 : 230-242, 2005
6 Dykstra BJ, "Lung volumes in 4,774 patients with obstructive lung disease" 115 : 68-74, 1999
7 American Thoracic Society, "Lung function testing:selection of reference values and interpretative strategies" 144 : 1202-18, 1991
8 American Medical Association, "Guides to the evaluation of permanent impairment"
9 National Heart, Lung, and Blood Institute and World Health Organization, "Global initiative for chronic obstructive lung disease: global strategy for the diagnosis, management, and prevention of chronic obstructive pulmonary disease" National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, August2004