1. The non value of sputum in the diagnosis of pneumococcal pneumonia;Barrett-Connor;Amer. Rev. resp. Dis.,1971
2. Clinical specimens for microbiologic examination;Barry,1978
3. Should fiberoptic bronchoscopy aspirates be cultured ?;Bartlett;Amer. Rev. resp. Dis.,1976
4. Diagnostic accuracy of transtracheal aspiration studies;Bartlett;Amer. Rev. resp. Dis.,1977
5. Bacteriology of expectored sputum with quantitative culture and wash technique compared to transtracheal aspirates;Bartlett;Amer. Rev. resp. Dis.,1978