Swine flu and respiratory protection.
Lange
John H
JH
Cegolon
Luca
L
Mastrangelo
G
G
D004196:Disease Outbreaks / Q000517:prevention & control*; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D007251:Influenza, Human / Q000453:epidemiology / Q000517:prevention & control*; D012134:Respiratory Protective Devices