Affiliation: | ? Resident, Department of Oral and Maxillofacial Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People''s Republic of China;† Professor, Department of Oral and Maxillofacial Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People''s Republic of China;‡ Attending Doctor, Department of Radiology, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People''s Republic of China;§ Attending Doctor, Department of Oral and Maxillofacial Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People''s Republic of China;‖ Resident, Department of Oral and Maxillofacial Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People''s Republic of China;¶ Attending Doctor, Department of Oral and Maxillofacial Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People''s Republic of China |