RT Journal Article SR Electronic T1 High-flow nasal cannula for COVID-19 patients: risk of bio-aerosol dispersion JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 2003136 DO 10.1183/13993003.03136-2020 VO 56 IS 4 A1 Jie Li A1 James B. Fink A1 Stephan Ehrmann YR 2020 UL http://erj.ersjournals.com/content/56/4/2003136.abstract AB