Author Topic: Face masks have negligible effect on CO2 and O2 levels  (Read 2 times)

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Offline agate

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Face masks have negligible effect on CO2 and O2 levels
« on: October 10, 2020, 09:04:00 pm »
From Medical News Today (October 10, 2020)--"Face masks have negligible effect on CO2 and O2 levels":


https://bit.ly/3lCfacO
MS Speaks--online for 14 years

SPMS, diagnosed 1980. Avonex 2001-2004. Copaxone 2007-2010.

 

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