1. Department of Oral Pathology and Biology, University of Medicine and Dentistry of New Jersey, Newark, NJ, USA
2. Electron Microscopy Core Facility, Mayo Clinic, Rochester, Minnesota, USA
3. Department of Periodontlogy, University of Medicine and Dentistry of New Jersey, Newark, NJ, USA
4. Department of Pathology, University of Medicine and Dentistry of New Jersey, Newark, NJ, USA
5. Department of Journal of General Microbiology, College of Physicians & Surgeons, Columbia University, New York, NY, USA