The characteristics of all the subjects
| Sex | 31 man, 4 women |
| Age | 39.8 ±5.9 |
| BMI | 27.8±3.8 |
| Duration of Ilness | 11.18±6.4 |
| Smoking history | 23 smoker, 12 nonsmoker |
| TB history | 21 patients had no TB history,11 unknown |
| HLA B27 | 5 negative, 16 Positive, 13 unknown |