Jian Ye*, George Coulouris, Irena Zaretskaya, Ioana Cutcutache, Steve Rozen and Thomas L Madden
* Corresponding author: Jian Ye jianye@ncbi.nlm.nih.gov
BMC Bioinformatics 2012, 13:134 doi:10.1186/1471-2105-13-134