. 2008 Sep 30;17(6):416–421. doi: 10.1136/tc.2008.026732
© Wakefield et al 2008
This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 1. Original and plain packs for each brand.
