. 2016 Aug 17;16(3):7. doi: 10.5334/ijic.2014
Copyright: © 2016 The Author(s)
This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International License (CC-BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. See http://creativecommons.org/licenses/by/4.0/.
Figure 2.
Objective burden data collection.