50
Participants
Start Date
April 7, 2017
Primary Completion Date
April 30, 2019
Study Completion Date
April 30, 2019
exposure to particulate matter with N 95 facemask
2 hours' / day exposure to particulate matter face mask worn during exposure.
exposure to particulate matter with no face mask
2 hours'/ day exposure to particulate matter with no face mask
University of Michigan, Ann Arbor
University of Michigan
OTHER