RT Journal Article SR Electronic T1 The reproducibility of COPD blood eosinophil counts JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1800427 DO 10.1183/13993003.00427-2018 VO 52 IS 1 A1 Thomas Southworth A1 Gussie Beech A1 Philip Foden A1 Umme Kolsum A1 Dave Singh YR 2018 UL http://erj.ersjournals.com/content/52/1/1800427.abstract AB