Department of Oral and Maxillofacial Surgery, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China

Address correspondence and reprint requests to Guowen Sun, PhD, Department of Oral and Maxillofacial Surgery, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China; E-mail: [email protected]

This study was supported by National Science Foundation of China (No. 82002864) and 3456 Cultivation Program For Junior Talents of Nanjing Stomatological School, Medical School of Nanjing University (0222C109).

This study was approved by the Ethics Committee of the Stomatological Hospital Affiliated Medical School, Nanjing University (approval no. YW-2017NL-013).

The authors declare no conflicts of interest.

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