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We measured the endtidal carbon dioxide levels in four anaesthetists wearing the same design of mask, before and after performing tracheal intubation on another patient with pulmonary tuberculosis. Measurements were taken by sidestream capnometer (Poet LT, Criticare, Waukesha, WI) using a 15mm Tpiece held between the lips. China 2020 Wholesale 3 Ply Disposable Civilian Face Masks Mask, Face Mask, Face Masks manufacturer / supplier in China, offering 2020 Wholesale 3 Ply Disposable Civilian Face Masks (GPM-DC001), Refillable Plastic Bottle with Hook Travel Portable Sanitizer Bottle (GMSP-007), 60ml Plastic Bottle with Metal Hook (GMSP-007) and so on.

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