@misc{indiciae9891b70f1487, title = {Optimizing sputum methodology.}, author = {E M Erin and P J Barnes and T T Hansel}, year = {2002}, doi = {10.1046/j.1365-2222.2002.01409.x}, url = {https://pubmed.ncbi.nlm.nih.gov/11994085/}, note = {Source identifier: 11994085} }