Surgical mask placement over N95 filtering facepiece respirators: physiological effects on healthcare workers.
Roberge
Raymond J
RJ
National Personal Protective Technology Laboratory/National Institute for Occupational Safety and Health, Laboratory/NIOSH, 626 Cochrans Mill Road, Pittsburgh, PA 15236, USA. dtn0@cdc.gov
Coca
Aitor
A
Williams
W Jon
WJ
Palmiero
Andrew J
AJ
Powell
Jeffrey B
JB