Table 1. Ethnic groups of the study sample.
| Ethnic groups | Total |
|---|---|
| Persian | 54% |
| Azari | 16% |
| Kurd | 10% |
| Lur | 5% |
| Gilaki | 4% |
| Turkman | 2% |
| Arab | 2% |
| Balouch | 2% |
| Bakhtiari | 1% |
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