1. Quantitative sputum gram stains in chronic bronchial disease;Baigelman;Lung,1979
2. Cumitech 15: laboratory diagnosis of viral infections;Chernesky,1982
3. Presence of alveolar macrophages as a criterion for determining the suitability of sputum specimens for bacterial culture;Courcol;Eur. J. Clin. Microbiol.,1984
4. Concentrations of bacteria in cerebrospinal fluid of patients with bacterial meningitis;Feldman;J. Pediatr.,1976
5. Effect of prior antibiotic therapy on concentrations of bacteria in CSF;Feldman;Am. J. Dis. Child.,1978