1. Department of Pediatrics, Baylor College of Medicine, Houston, Texas;
2. Department of Medicine, Baylor College of Medicine, Houston, Texas;
3. Texas Medical Center Library, Houston, Texas;
4. National School of Tropical Medicine, Baylor College of Medicine, Houston, Texas;
5. Department of Biology, Baylor University, Waco, Texas
6. Hagler Institute for Advanced Study at Texas A&M University, College Station, Texas;
7. Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, Texas;