Brown-Beresford K, Currie J, Thiruvenkatarajan V: The application of a surgical face mask over different oxygen delivery devices; a crossover study of measured end-tidal oxygen concentrations.
Am Rev Respir Dis 1982; 126: 825–8. 3. Brown-Beresford K, Currie J, Thiruvenkatarajan V: The application of a surgical face mask over different oxygen delivery devices; a crossover study of ...