Table 2. Distribution of patients according to age .
| Intervals | Frequency (n = 150) | Percentage |
| 21-30 | 42 | 28 |
| 31-40 | 64 | 43 |
| 41-50 | 28 | 19 |
| 51-60 | 13 | 8 |
| 61-70 | 3 | 2 |
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