1. Graduate Institute of Microbiology, College of Medicine, National Taiwan University, Taipei, Taiwan
2. Department of Pharmacology and Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, CA, USA
3. Department of Oral and Molecular Microbiology, Osaka University Graduate School of Dentistry, Suita, Japan
4. Department of Clinical Laboratory Sciences and Medical Biotechnology, College of Medicine, National Taiwan University, Taipei, Taiwan