Effectiveness of N95 respirators versus surgical masks in protecting health care workers from acute respiratory infection: a systematic review and meta-analysis.
CMAJ. 2016 May 17;188(8):567-574. doi: 10.1503/cmaj.150835. Epub 2016 Mar 7.
CMAJ. 2016.
PMID: 26952529
Free PMC article.
Review.