. 2018 Mar 7;2018:4568903. doi: 10.1155/2018/4568903
Copyright © 2018 Lutz Heinemann and Christopher G. Parkin.
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 4.
FEV1 as a function of time in the study.