1. The trouble with rationing;Relman;N Engl J Med,1990
2. Principles of aerosol therapy;Newhouse;Chest,1982
3. Spacer devices for aerosol therapy;Salzman;Clin Challenge Cardiopulmon Med,1986
4. Current concepts: control of asthma by aerosols;Newhouse;N Engl J Med,1986
5. Aerosol therapy of reversible airflow obstruction: concepts and clinical applications;Newhouse;Chest,1987