@misc{indiciae33038fed996a, title = {Why do sputum cultures fail to yield pathogens?}, author = {M W Burns and L Devitt and D H Bryant}, year = {1973}, doi = {10.5694/j.1326-5377.1973.tb76549.x}, url = {https://pubmed.ncbi.nlm.nih.gov/4148395/}, note = {Source identifier: 4148395} }