. 2014 Jun 1;2014:943824. doi: 10.1155/2014/943824
Copyright © 2014 Sarah Keller 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 4.
Nasal flow. Dotted lines present single studies.