1. University of Utah School of Medicine, Salt Lake City, Utah, USA;
2. University of Utah School of Medicine, Salt Lake City, Utah, USA;Veterans Affairs Medical Center, Salt Lake City, Utah, USA;
3. Centers for Disease Control and Prevention, Atlanta, Georgia, USA; §ARUP Laboratories, Inc., Salt Lake City, Utah, USA;
4. Lakeshore Medical Clinic, Milwaukee, Wisconsin, USA;
5. Kansas City School of Medicine, Kansas City, Missouri, USA; and
6. University of Virginia, Charlottesville, Virginia, USA