Reference:
  Author: Marcus Lechner and Sven Findeiß and Lydia Steiner and Manja Marz and Peter F Stadler and Sonja J Prohaska
  Title: "Proteinortho: Detection of (Co-)orthologs in large-scale analysis"
  Journal: BMC Bioinformatics
  Year: 2011
  Volume: 12
  Pages: 124
  DOI: 10.1186/1471-2105-12-124
  PMID: 21526987
  URL: http://www.biomedcentral.com/1471-2105/12/124
  eprint: http://www.biomedcentral.com/content/pdf/1471-2105-12-124.pdf
