TY - JOUR T1 - Lack of clinically relevant differences between combination therapy and monotherapy in COPD JF - European Respiratory Journal JO - Eur Respir J SP - 1204 LP - 1204 DO - 10.1183/09031936.00143513 VL - 43 IS - 4 AU - Brian J. Lipworth Y1 - 2014/04/01 UR - http://erj.ersjournals.com/content/43/4/1204.1.abstract N2 - To the Editor:Bateman et al. [1] reported significantly greater mean improvements with indacaterol/glycopyrronium combination therapy, Ultibro Breezhaler (QVA149) compared to monotherapy with either indacaterol (0.07 L), glycopyrronium (0.09 L) or tiotropium (0.08 L) for the primary outcome of … ER -