1. Alternative visions of the future;Murray,1996
2. Global initiative for chronic obstructive lung disease;Am J Respir Crit Care Med,2001
3. Host–microbe relationships in chronic respiratory infection;Cole;Respiration,1989
4. Bacterial infection in chronic obstructive pulmonary disease;Murphy;Am Rev Respir Dis,1992
5. The pathophysiological consequences of smoking on the respiratory system;Jones;Canadian Journal of Public Health,1981