The case for face masks-zorro or zero?
Black
S R
SR
Cook County Hospital and Rush Medical College, Chicago, IL 60612, USA.
Weinstein
R A
RA
D006801:Humans; D007049:Iatrogenic Disease / Q000517:prevention & control*; D008397:Masks; D016920:Meningitis, Bacterial / Q000517:prevention & control*; D013129:Spinal Puncture / Q000009:adverse effects*; D013290:Streptococcal Infections / Q000517:prevention & control*