An appraisal of the role of surgical face masks.
D005374:Filtration; D006801:Humans; D008397:Masks; D008505:Medical Staff, Hospital; D009305:Nasopharynx / Q000382:microbiology; D009873:Operating Rooms; D013210:Staphylococcus / Q000302:isolation & purification; D013523:Surgical Equipment; D013530:Surgical Wound Infection / Q000382:microbiology / Q000517:prevention & control*