. 2013 Dec 26;2013:846027. doi: 10.1155/2013/846027
Copyright © 2013 Z. Liu and C. F. Lippa.
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.
Mean DSS score by age, sex, and race/ethnicity.