Late breaking abstract - Dose-ranging study of mepolizumab in eosinophilic COPD - Pavord, I; Kerstjens, H; Korn, S; Criner, G; Sagara, H; Rubin, D; Harris, S; Mayer, B; Bradford, E; Albers, F; Yancey, S (European Respiratory Society International Congress 2017, 2017)