. 2019 Dec 31;2019:6303474. doi: 10.1155/2019/6303474
Copyright © 2019 Krystyna Kowalczuk et al.
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 1.
Ranking of work arduousness measures.