Precommitting to choose wisely about low-value services: a stepped wedge cluster randomised trial
Jeffrey Todd Kullgren, Erin Krupka, Abigail Schachter, Ariel Linden, Jacquelyn Miller, Yubraj Acharya, James Alford, Richard Duffy, Julia Adler-Milstein
BMJ Quality & Safety May 2018, 27 (5) 355-364; DOI: 10.1136/bmjqs-2017-006699