Reference:
  Title: "R/qtl: QTL mapping in experimental crosses"
  Author: Karl W. Broman and Hao Wu and Saunak Sen and Gary A. Churchill
  Year: 2003
  Journal: Bioinformatics
  Volume: 19
  Pages: 889-890
  PMID: 12724300
  DOI: 10.1093/bioinformatics/btg112
  URL: http://bioinformatics.oxfordjournals.org/content/19/7/889
  eprint: http://bioinformatics.oxfordjournals.org/content/19/7/889.full.pdf+html
