. 2009 Sep 1;2009:687609. doi: 10.4061/2009/687609
Copyright © 2009 Tomoko Kobayashi 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 7.
After postdilation, debris was sucked out again.