The effect on participation rates of including focused spirometry information in a health check invitation: a cluster-randomised trial in Denmark.
Lene Maria ØrtsAnders LøkkeAnne-Louise BjerregaardHelle Terkildsen MaindalKasper NormanBodil Hammer BechAnnelli SandbækPublished in: BMC public health (2019)
ClinicalTrials.gov: NCT02615769 . Registered on 25 November 2015. The trial protocol has been published.