RT Journal Article SR Electronic T1 Do Respirators Protect Health-Care Workers From Airborne Infectious Diseases? JF Respiratory Care FD American Association for Respiratory Care SP 1660 OP 1664 VO 53 IS 12 A1 Radonovich, Lewis J A1 Hodgson, Michael J A1 Cohen, Howard J YR 2008 UL http://rc.rcjournal.com/content/53/12/1660.abstract AB