[1
]
Department of Pathology, University of Iowa Carver College of Medicine, Iowa City,
Iowa, USA.
[2
]
Department of Laboratory Medicine, National Institutes of Health Clinical Center,
Bethesda, Maryland, USA.
[3
]
Stead Family Department of Pediatrics, University of Iowa Carver College of Medicine,
Iowa City, Iowa, USA.
[4
]
Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa
City, Iowa, USA.
[5
]
State Hygienic Laboratory at the University of Iowa, Iowa City, Iowa, USA.