Bafadhel M, Barnes N, Bourke SC, Compton C, Criner GJ, Dransfield MT, Halpin DMG, Han MK, Hartley B, Jones CE, Lange P, Lettis S, Lipson DA, Lomas DA, Martin N, Martinez FJ, Wise R, Singh D. A single blood eosinophil count measurement is as good as two for prediction of ICS treatment response in the IMPACT trial. Eur Respir J. 2021 09; 58(3).