Reference:
  Author: M. Lawrence and W. Huber and H. Pagès and P. Aboyoun and M. Carlson et al.
  Title: Software for Computing and Annotating Genomic Ranges
  Journal: PLoS Comput Biol
  Year: 2013
  Volume: 9
  Number: 8
  Pages: e1003118
  DOI: 10.1371/journal.pcbi.1003118
  PMID: 23950696
  URL: http://www.ploscompbiol.org/article/info%3Adoi%2F10.1371%2Fjournal.pcbi.1003118
  eprint: 10.1371/journal.pcbi.1003118
