Assessing treatment fidelity and contamination in a cluster randomised controlled trial of motivational interviewing and cognitive behavioural therapy skills in type 2 diabetes.
Nicholas MagillHelen GravesNicole de ZoysaKirsty WinkleyStephanie AmielEmma ShuttlewoodSabine LandauKhalida IsmailPublished in: BMC family practice (2018)
ISRCTN75776892 ; date registered: 19/05/2010.