1. Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892–0425, USA.
2. Guangxi Institute of Parasitic Disease Control, 80 Taoyuan Road, Nanning, Guangxi 530021, Peoples' Republic of China.
3. Computational Biology Branch, National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD 20894–6075, USA.