Reviewer_2_v.1 – Supplemental material for Early and sustained symptom improvement with umeclidinium/vilanterol versus monotherapy in COPD: a post hoc analysis of the EMAX randomised controlled trial

Supplemental material, Reviewer_2_v.1 for Early and sustained symptom improvement with umeclidinium/vilanterol versus monotherapy in COPD: a post hoc analysis of the EMAX randomised controlled trial by Edward M Kerwin, Isabelle H Boucot, Claus F Vogelmeier, Francois Maltais, Ian P Naya, Lee Tombs, Paul W Jones, David A Lipson, Tom Keeley and Leif Bjermer in Therapeutic Advances in Respiratory Disease