*Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology South Avenue Zhongguancun, Haidian District, Beijing, PR China

†Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing China

Address correspondence and reprint requests to Jingang An, DDS, MD, Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, NO. 22 Zhongguancun Nandajie, Haidian District, Beijing 100081, PR China; E-mail: [email protected]

The authors report no conflicts of interest.

Supplemental Digital Content is available for this article. Direct URL citations are provided in the HTML and PDF versions of this article on the journal's website, www.jcraniofacialsurgery.com.