. 2020 Oct 27;20(6):273. doi: 10.3892/etm.2020.9403
Copyright: © Yin et al.
This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.
Figure 1.
Study flow chart.