1. Evaluation and treatment of pneumonia in adult patients;Amin;Mod Med,1989
2. Bacteriology of hospital-acquired pneumonia;Bartlett;Arch Intern Med,1986
3. Acute and chronic bronchitis;Brown;Postgrad Med,1989
4. Mortality trends—United States, 1986–1988;Centers for Disease Control;MMWR,1989
5. Pneumococcal polysaccharide vaccine;Centers for Disease Control;MMWR,1989