Viscusi, Dennis J Evaluation of the benefit of the user seal check on N95 filtering facepiece respirator fit. [electronic resource] - Journal of occupational and environmental hygiene 2012 - 408-16 p. digital Publication Type: Evaluation Study; Journal Article ISSN: 1545-9632 Standard No.: 10.1080/15459624.2012.683757 doi Subjects--Topical Terms: Equipment DesignFemaleHumansMaleOccupational HealthRespiratory Protective Devices--standardsSafety Management--methods