RT Journal Article SR Electronic T1 Neutrophilic asthma: welcome back! JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1901846 DO 10.1183/13993003.01846-2019 VO 54 IS 5 A1 Peter G. Gibson A1 Paul S. Foster YR 2019 UL http://erj.ersjournals.com/content/54/5/1901846.abstract AB