2003; Chao et al. 1997; Chen et al. 1999; Chen et al. 1996; Chen et al. 1997; Fan et al. 1998; Guo et al. 2010; Hasegawa et al. 2002; Higuchi et al. 1996b; Huang et al. 2004; Iwahashi et al. 1995; Jing et al. 2009; Kim et al. 2008; Kim et al. 2004; Lee et al. 2001; Lee et al. 1999; Lee et al. 2009; Lee et al. 2010; Leng et al. 2008; Maezawa et al. 1995; Matsushita et al. 2001; Miyatake et al. 1995; Muramatsu et al. 1995; Nakamura et al. 1996; Nakamura et al. 1999; Nishizawa et al. 2006; Paik et al. 2000; Park et al. 2001; Sasabe et al. 2007; Shen et al. 1997a; Shen et al. 1997b; Shin et al. 2010; Tan et al. 2010; Tanaka et al. 1996; Thomasson et al. 1994; Thomasson et al. 1991; Xu et al. 2002; Yamauchi et al. 1995; Yan et al. 2003; Yu et al. 2002) of Asian populations (including Chinese aboriginal populations) and one study (Konishi et al. 2004) of Mexican Americans. One study (Xu et al. 2002) investigated heroin dependence and abuse and 52 studies investigated AD and alcohol abuse or AD only. Among these studies of
