1. McArdle Laboratory for Cancer Research, University of Wisconsin–Madison, Madison, Wisconsin 53705;
2. Morgridge Institute for Research, Madison, Wisconsin 53715
3. Research Center for Emerging Viral Infections and Department of Microbiology and Immunology, Chang Gung University, Taoyuan 33302, Taiwan
4. Department of Medical Laboratory, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan