Upper Respiratory
 
The first trial of surgical masks versus fit and non-fit tested N95 respirators in the prevention of respiratory virus infection in hospital workers in China
The first trial of surgical masks versus fit and non-fit tested N95 respirators in the prevention of respiratory virus infection in hospital workers in China
C. Raina MacIntyre, Quanyi Wang, Simon Cauchemez, et al.
 
Large Outbreak of Pandemic Influenza H1N1 2009 in a University-Based Summer Camp
Large Outbreak of Pandemic Influenza H1N1 2009 in a University-Based Summer Camp
Edward F Hendershot, Coleen K Cunningham, Devdutta G Sangvai, et al.