Precommitting to choose wisely about low-value services: a stepped wedge cluster randomised trial.
Jeffrey Todd KullgrenErin KrupkaAbigail SchachterAriel LindenJacquelyn MillerYubraj AcharyaJames AlfordRichard DuffyJulia Adler-MilsteinPublished in: BMJ quality & safety (2017)
NCT02247050; Pre-results.