1. Acute bronchitis: aetiology, symptoms and treatment;Verheij;Fam Pract,1989
2. Respiratory infections in ambulatory adults;Perlman,1990
3. Pleuropulmonary and bronchial infections;Gwaltney,1990
4. Bronchitis and pneumonia in ambulatory patients;Gooch;Pediatr Infect Dis J,1987
5. Management of acute and chronic respiratory tract infections;Ellner;Am J Med,1988