Table 1.
Description of the studied populations
| Case | Control | |
|---|---|---|
| Number | 309 | 1080 |
| Age, year, mean ± SD | 28.72±12.78 | 29.38±8.63 |
| Gender (male/female) | 115/194 | 462/618 |
Abbreviations: SD, stand error.
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