Behaviour-change intervention in a multicentre, randomised, placebo-controlled COPD study: methodological considerations and implementation.
Jean BourbeauKim L LavoieMaria F SedenoDorothy De SousaDamijan ErzenAlan HamiltonFrançois MaltaisThierry TroostersNancy LeidyPublished in: BMJ open (2016)
NCT02085161.