. 2019 Jun 12;9(3):391–405. doi: 10.1007/s13555-019-0305-2
© The Author(s) 2019
Open Access This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License ( http://creativecommons.org/licenses/by-nc/4.0/ ), which permits any noncommercial use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Fig. 1.
Selection of publications for the analysis