1. Department of Biochemistry and Molecular Biology, Huck Center for Malaria Research, Pennsylvania State University, University Park, Pennsylvania, USA
2. Center for Molecular Parasitology, Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, Pennsylvania, USA
3. Medical Research Service, Department of Veterans Affairs Medical Center, Portland, Oregon, USA
4. Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania, USA