Table 2.

Distribution of SULT1A1 Arg213His genotype among patients and controls.

Studies	Patients			Controls			HWE
	Arg/Arg	Arg/His	His/His	Arg/Arg	Arg/His	His/His
Zheng	196	155	33	164	174	48	Yes
Hung	121	72	8	116	88	10	Yes
Kellen	111	79	18	191	151	47	Yes
Covolo	120	77*		114	97*		Yes
Lumbreras	57	54	13	513	451	125	Yes
Wang	261	37	2	240	54	6	Yes
Cui	218	59	5	201	52	4	Yes

^*Combined numbers of Arg/His and His/His genotypes.

HWE – Hardy-Weinberg equilibrium.