1. Occupational and environmental lung diseases: an overview;Speizer;Environ Health Perspect,2000
2. Review: occupational and environmental lung disease;Singh;Curr Opin Pulm Med,2002
3. The international classification of impairments, disabilities and handicaps,1980
4. Guides to the evaluation of permanent impairment. The Respiratory System,2000
5. Evaluation of impairment/disability secondary to respiratory disorders;Am Rev Respir Dis,1986