. 2017 Mar 15;88(4):370–376. doi: 10.1080/17453674.2017.1301743
© 2017 The Author(s). Published by Taylor & Francis on behalf of the Nordic Orthopedic Federation.
This is an Open Access article distributed under the terms of the Creative Commons Attribution-Non-Commercial License (https://creativecommons.org/licenses/by-nc/3.0)
Figure 1.
Exclusion of patients.