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. 2014 Jul 21;2014(7):CD009285. doi: 10.1002/14651858.CD009285.pub3

Gu 2007.

Methods Design: 12 weeks, double‐blind, randomised, placebo‐controlled, parallel group study
Participants Population: 57 patients
Inclusion criteria: FEV1/FVC ≤ 0.70, FEV1 ≥ 30% predicted
Interventions  
Outcomes Dyspnoea scale, 6MWD, FEV1/FVC, FEV1%, IC
Notes