1 Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE 68198, USA; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA. Electronic address: jtalmadg@unmc.edu.
2 Centre de Recherche du CHU de Québec-Université Laval, Québec, QC G1V 4G2, Canada. Electronic address: francois.marceau@crchudequebec.ulaval.ca.