The variant call format and VCFtools.
Danecek P, Auton A, Abecasis G, Albers CA, Banks E, DePristo MA,
Handsaker RE, Lunter G, Marth GT, Sherry ST, McVean G, Durbin R;
1000 Genomes Project Analysis Group.
Bioinformatics. 2011 Aug 1;27(15):2156-8. Epub 2011 Jun 7.