Table 1. The Distribution of the I/D Genotype for Cases and Controls.

References	Year	Cases						Controls
		Distribution of I/D genotype			Allele Frequency		HWE P	Distribution of I/D genotype			Allele Frequency				HWE P
		II	ID	DD	I	D		II	ID	DD	I		D
W. W. Yeo, et al .	1992	5	6	7	16	20	>0.05	2	6	7	10	20		>0.05
K. Furuya, et al.	1994	19	12	0	50	12	>0.05	25	35	11	85	57		>0.05
C. Kreft-Jais, et al.	1994	15	29	27	59	83	>0.05	12	33	30	57	93		>0.05
I.G. Chadwick, et al.	1994	6	12	13	24	38	>0.05	58	97	66	213	229		>0.05
R.Y. Zee, et al.	1998	23	41	35	87	111	>0.05	12	37	21	61	79		>0.05
Je Hyeong Kim, et al.	1999	6	7	24	19	55	<0.05	57	55	290	169	635		<0.05
Wu Jianqing, et al.	1999	24	15	13	63	41	<0.05	21	19	30	61	79		<0.05
H. Okumura, et al.	2000	20	16	6	56	28	>0.05	19	31	4	69	39		>0.05
Y-J Lee, et al.	2001	46	44	3	136	50	>0.05	33	48	15	114	78		>0.05
S Mukae, et al.	2002	8	45	17	61	79	<0.05	28	73	19	129	111		<0.05
Wang huijuan, et al.	2003	18	14	8	50	30	>0.05	35	36	34	106	104		<0.05
S-M Yang, et al.	2003	21	20	11	62	42	>0.05	10	21	19	41	59		>0.05
J Lu, et al.	2003	148	163	40	459	243	>0.05	160	165	40	485	245		>0.05
Ye Ruan-jia, et al.	2004	27	14	7	68	28	<0.05	16	35	28	67	91		>0.05
Shi Meijun, et al.	2008	28	15	8	71	31	<0.05	17	36	28	70	92		>0.05
Tang Xiao-Hong, et al.	2008	32	26	10	90	46	>0.05	24	48	26	96	100		>0.05
S. W. Woo, et al.	2009	26	16	8	68	32	>0.05	24	31	5	79	41		>0.05

References in bold-face were studies within Hardy–Weinberg equilibrium.