RT Journal Article SR Electronic T1 Fade to black! JF Breathe JO Breathe FD European Respiratory Society SP 200221 DO 10.1183/20734735.0221-2020 VO 16 IS 4 A1 Yousaf, Zohaib A1 Jamshaid, Muhammad Bilal A1 Khan, Dawlat A1 Murshed, Khaled A. A1 Munir, Huma YR 2020 UL http://breathe.ersjournals.com/content/16/4/200221.abstract AB