PHILADELPHIA (MedPage Today) -- In a surprise twist, authors here retracted findings of a study that found N95 respirators were better than surgical masks at preventing flu.
surprise twist |
surprise twistN95 vs Surgical Mask Findings RetractedMedPage Today Infectious Disease Sat, 10/31/2009 - 18:09
PHILADELPHIA (MedPage Today) -- In a surprise twist, authors here retracted findings of a study that found N95 respirators were better than surgical masks at preventing flu. |
