1. Department of Pediatric Dentistry School of Dentistry University of Alabama at Birmingham Birmingham AL USA
2. Department of Periodontics The Affiliated Stomatological Hospital School of Medicine Zhejiang University Hangzhou China
3. Department of Endodontics School of Stomatology Wuhan University Wuhan China
4. Department of Microbiology University of Alabama at Birmingham Birmingham AL USA
5. Department of Molecular & Cellular Pathology School of Medicine University of Alabama at Birmingham Birmingham AL USA