@misc{indiciae5939b72ed89e, title = {An unusual ventilator valve failure.}, author = {J D Kneeshaw and D W Bethune and I Hardy}, year = {1988}, doi = {10.1111/j.1365-2044.1988.tb06665.x}, url = {https://pubmed.ncbi.nlm.nih.gov/3165607/}, note = {Source identifier: 3165607} }