1. Department of Pathology and Laboratory Medicine, Keck School of Medicine of USC, Los Angeles, California, USA
2. Los Angeles County + University of Southern California (LAC+USC) Medical Center, Los Angeles, California, USA
3. Division of Infectious Diseases, Keck School of Medicine of USC, Los Angeles, California, USA
4. Division of Pediatric Infectious Diseases, Department of Infection Prevention and Control, Harbor-UCLA Medical Center, Torrance, California, USA
5. Department of Pathology, Harbor-UCLA Medical Center, Torrance, California, USA