Protocol for a process evaluation of a cluster randomised controlled trial to improve management of multimorbidity in general practice: the 3D study.
Cindy MannAlison ShawBruce GuthrieLesley WyeMei-See ManSandra HollinghurstSara BrookesPeter BowerStewart MercerChristopher SalisburyPublished in: BMJ open (2016)
ISRCTN06180958.