Center for Genomics and Bioinformatics, Karolinska Institutet, Berzelius Väg, 35, 171 77 Stockholm, Sweden. ola.larsson@cgb.ki.se|Center for Genomics and Bioinformatics, Karolinska Institutet, Berzelius Väg, 35, 171 77 Stockholm, Sweden. ola.larsson@cgb.ki.se|Center for Genomics and Bioinformatics, Karolinska Institutet, Berzelius Väg, 35, 171 77 Stockholm, Sweden. ola.larsson@cgb.ki.se