Table 1 Main characteristics of the SNP databases currently accessed by SPSmart

HapMap Phase II

4,098,495

4

http://hapmap.org/genotypes/

HapMap Phase III

1,614,792

11

http://hapmap.org/genotypes/

Perlegen

1,580,349

3

http://genome.perlegen.com/

Stanford HGDP

660,918

52

ftp://ftp.ceph.fr/hgdp_supp1/

Michigan HGDP

525,910

33

ftp://ftp.ceph.fr/hgdp_supp2/