1. 1) U.S. Centers for Disease Control and Prevention (1996) Laboratory performance evaluation of N95 filtering facepiece respirators, 1996. https://www.cdc.gov/mmwr/preview/mmwrhtml/00055954.htm. Accessed August 29, 2019.
2. 2)U.S. Occupational safety and health administration (1998)Respiratory Protection, 29 CFR 1910.134: Final Rule. Fed Regist 63: 1152–300.
3. 3) Kim H, Han DH, Roh YM, Kim K, Park YG (2003) Facial anthropometric dimensions of Koreans and their associations with fit of quarter-mask respirators. Ind Health41, 8–18.
4. 4) Ciotti C, Pellissier G, Rabaud C, Lucet JC, Abiteboul D,D,Bouvet E, GERES (2012) Effectiveness of respirator masks for healthcare workers, in France. Med Mal Infect42, 264–9.
5. 5) Cheng WJ, Yu YY, Yu D, Ping J, Chen WH (2012) [The relationship between fit characteristics of two kinds of self-inhalation air-purifying dust respirators and head-face dimensions of subjects]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi30, 352–5 (in Chinese).