. 2019 Dec 15;26(2):524–540. doi: 10.1111/jep.13321
© 2019 The Authors. Journal of Evaluation in Clinical Practice published by John Wiley & Sons Ltd
This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.