1. Recommendation: Pneumococcal polysaccharide vaccine;Centers for Disease Control;MMWR,1978
2. Capsular types and outcome of bacteremic disease in the antibiotic era;Mufson;Arch Intern Med,1974
3. Pneumococcal infections;Mufson;JAMA,1981
4. Prevention of pneumococcal pneumonia by vaccination;Austrian;Trans Assoc Am Physicians,1976
5. Update: pneumococcal polysaccharide vaccine usage-United States;Centers for Disease Control;MMWR,1984