1 Department of Pathology, Stanford University School of Medicinegrid.471392.a, Stanford, California, USA.
2 Clinical Microbiology Laboratory, Stanford University Medical Center, Palo Alto, California, USA.
3 Department of Medicine, Division of Infectious Diseases and Geographic Medicine, Stanford University School of Medicinegrid.471392.a, Stanford, California, USA.
4 Institute for Clinical and Experimental Pathology, ARUP Laboratories, Salt Lake City, Utah, USA.