Table 1.

Clinical and demographic features of patients (patient number = 53).

	n (%) 53 (100%)
Mean age, yrs: 51.2 (range 22–79)
Male	34 (64.1%)
Female	19 (35.9%)
Smokers	25 (47.1%)
Family history	24 (45.2%)
Disease duration	16 yrs (range 1–46)
Mean age of onset, yrs: 34.6 (range 8–73)