Case Method in COPD education for primary care physicians: study protocol for a cluster randomised controlled trial.
Hanna SandelowskyIngvar KrakauSonja ModinBjörn StällbergAnna NagerPublished in: Trials (2017)
ClinicalTrials.gov, identifier: NCT02213809 . Registered on 10 August 2014. Protocol version: Issue date: May 2014.