Table 1. Main characteristics of selected studies.

First author	Year	Country	Ethnicity	Case	Control	Genotyping method
Suarez	2001	US	Caucasian	257	355	PCR–RFLP
Suzuki	2002	Japan	Asian	81	106	PCR–RFLP
Stanford	2003	Mixed	Mixed	551	521	PCR–RFLP
Noonan-Wheeler	2006	US	Caucasian	150	170	Prosequencing
Robbins	2008	US	African	243	296	Prosequencing
Shea	2002	Tobago	African	119	223	PCR–RFLP
Xu	2001	US	Caucasian	362	182	PCR–RFLP
Yokomizo	2004	Japan	Asian	285	233	PCR–RFLP
Meitz	2002	UK	Caucasian	382	435	PCR–RFLP
Vesprini	2001	Mixed	Mixed	431	1505	PCR–RFLP
Wang	2001	US	Caucasian	444	502	Prosequencing
Takahashi	2003	Japan	Asian	98	255	PCR-SSCP
Severi	2003	Australia	Caucasian	825	732	PCR–RFLP
Fujiwara	2002	Japan	Asian	350	356	PCR–RFLP
Adler	2003	Canada	Caucasian	199	525	PCR–RFLP
Tavigian	2001	Canada	Caucasian	429	148	Taqman
Rebbeck	2000	US	Caucasian	270	250	PCR–RFLP
Rokman	2001	Finland	Caucasian	574	568	PCR–RFLP

Abbreviation: RFLP, restriction fragment length polymorphism.