@misc{indiciaed7b951cef429, title = {Simple device for tracheobronchial aspiration.}, author = {E B EMERSON}, year = {1953}, doi = {10.1001/jama.1953.02940270026006a}, url = {https://pubmed.ncbi.nlm.nih.gov/13096310/}, note = {Source identifier: 13096310} }