1. Department of Pathology, St. Jude Children’s Research Hospital, Memphis, Tennessee, USA
2. Department of Biostatistics, St. Jude Children’s Research Hospital, Memphis, Tennessee, USA
3. Bio-Rad Laboratories, Hercules, California, USA
4. Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, USA
5. Vaccine and Infectious Diseaese Division, Fred Hutchinson Cancer Center, Seattle, Washington, USA
6. Department of Pathology, Stanford University School of Medicine, Stanford, California, USA
7. Division of Infectious Diseases and Geographic Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, California, USA
8. Division of Infectious Diseases, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA