RT Journal Article SR Electronic T1 More awareness is needed for severe acute respiratory syndrome coronavirus 2019 transmission through exhaled air during non-invasive respiratory support: experience from China JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 2000352 DO 10.1183/13993003.00352-2020 VO 55 IS 3 A1 Lili Guan A1 Luqian Zhou A1 Jinnong Zhang A1 Wei Peng A1 Rongchang Chen YR 2020 UL http://erj.ersjournals.com/content/55/3/2000352.abstract AB