Table 1. The characteristics summary of samples in the initial stage.

	Case	Control
No.	3621	3350
Male (%)	2027(55.98%)	2062(61.55%)
Age
mean(min-max)	30.46(3–80)	29.88(3–81)
s.d.	11.99	10.96
Age onset
mean(min-max)	21.31(1–39)	—
s.d.	8.69	—
Family History (%)	1135 (31.34%)	—

s.d.: standard deviation. mean: the mean value of age/age onset. min/max: the minimal/maximal vale of age/age onset.