. Author manuscript; available in PMC: 2015 Jul 28.
Published in final edited form as: J Clin Trials. 2014 Oct 16;4:191. doi: 10.4172/2167-0870.1000191
Copyright: © 2014 Schonberg MA, et al.
This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Figure 1.
Design of the cluster randomized controlled trial.