1. Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 11490, Taiwan.
2. Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan.
3. Graduate Institute of Microbiology, National Taiwan University, Taipei 10051, Taiwan.
4. Department of Diagnostic Pathology, Graduate School of Medicine and Pharmaceutical Science, University of Toyama, Toyama 930–0194, Japan.