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Studies included in meta-analysis
| Studies | Year | Cases (Cancer) | Controls (No cancer) | Tumor Type | ||
|---|---|---|---|---|---|---|
| Any C | G/G | Any C | G/G | |||
| Ziino | 2005 | 34 | 117 | 78 | 277 | Leukemia |
| Meyer-Siegler | 2007 | 76 | 55 | 29 | 99 | Prostate |
| Arisawa | 2008 | 106 | 123 | 167 | 261 | Gastric |
| Ding | 2008 | 93 | 166 | 45 | 256 | Prostate |
| Xue | 2010 | 110 | 228 | 147 | 369 | Leukemia |
Studies were selected from published articles gathered from a search of the literature using PubMed and meeting the selection criteria (as listed in Methods).
