Duration of symptoms | Frequency | Percent |
<1 year | 8 | 20.5 |
1 ? 3 years | 14 | 35.9 |
4 - 6 years | 10 | 25.6 |
7 - 9 years | 4 | 10.3 |
10 years and above | 3 | 7.7 |
Total number of patients | 39 | 100 |