1Department of Oral Maxillofacial Surgery, Nanjing Stomatological Hospital, Nanjing, China.
2Department of Microbiology, Immunology and Molecular Genetics, the University of California Los Angeles, USA.
3School of Chinese Medicine, the University of Hong Kong, Hong Kong.
4Department of Prosthodontics, West China College of Stomatology, University of Sichuan, Chengdu, P.R. China.
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