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Professional and Home-Made Face Masks Reduce Exposure to Respiratory Infections among the General Population
van der Sande M,
Teunis P,
Sabel R
(2008)
Professional and Home-Made Face Masks Reduce Exposure to Respiratory Infections among the General Population.
PLOS ONE 3(7): e2618.
https://doi.org/10.1371/journal.pone.0002618