RT Journal Article SR Electronic T1 Exhaled gases and the potential for cross-infection via noninvasive ventilation machines JF ERJ Open Research JO erjor FD European Respiratory Society SP 00109-2022 DO 10.1183/23120541.00109-2022 VO 8 IS 3 A1 Messer, Benjamin A1 Armstrong, Alison Dawn A1 Lane, Nicholas David A1 Robb, Ali A1 Bullock, Robert Edward YR 2022 UL http://openres.ersjournals.com/content/8/3/00109-2022.abstract AB