1. Department of Pathology , Laboratory Medicine, Emory University , Atlanta , Georgia , USA
2. Department of Biomedical Sciences, Discipline of Pathology , Edward Via College of Osteopathic Medicine – Carolinas , Spartanburg , South Carolina , USA
3. Department of Laboratory Medicine , Geisinger Medical Center , Danville , Pennsylvania , USA
4. Department of Pathology , Case Western Reserve University, University Hospitals Cleveland Medical Center , Cleveland , Ohio , USA
5. The Centers for Disease Control and Prevention , Atlanta , Georgia , USA