Gundersen Medical Foundation, La Crosse, WI 54601, USA; 2Department of Pathology, Gundersen Medical Center, La Crosse, WI 54601, USA; 3Department of Medical Oncology, Gundersen Medical Center, La Crosse, WI 54601, USA; 4Department of Infectious Disease, Gundersen Medical Center, La Crosse, WI...