Table 1.
Genotypic distribution of PDYN VNTR polymorphism in control and methamphetamine dependence cases
| Genotypes | Controls | Cases |
|---|---|---|
| 1/1 | 1 | 0 |
| 1/2 | 5 | 0 |
| 1/3 | 5 | 0 |
| 2/2 | 55 | 4 |
| 2/3 | 242 | 24 |
| 2/4 | 11 | 0 |
| 3/3 | 292 | 21 |
| 3/4 | 22 | 2 |
| 3/5 | 1 | 1 |
| 4/4 | 1 | 0 |
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