Reference:
 Author: Shaun Purcell and Benjamin Neale and Kathe Todd-Brown and Lori Thomas and Manuel A. R. Ferreira and David Bender and Julian Maller and Pamela Sklar and Paul I. W. de Bakker and Mark J. Daly and Pak C. Sham
 Title: "PLINK: a toolset for whole-genome association and population-based linkage analysis"
 Journal: American Journal of Human Genetics
 Volume: 81
 Number: 3
 Pages: 559-75
 Year: 2007
 PMID: 17701901
 URL: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1950838/
