Forrest plot showing associations between metallothionein staining and tumors (tumors versus healthy controls).

<p>The result of meta-analysis for particular tumor types displayed instead of individual studies. For more detailed results see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0085346#pone-0085346-t001" target="_blank">Table 1</a> and <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0085346#pone-0085346-t002" target="_blank">2</a>. Sorted alphabetically by tumor types. Forrest plot displayed as odds ratio and 95% confidence intervals. Red dashed line indicates the result for all tumor types together. OR, odds ratio; CI, confidence interval.