1. Department of Oral and Maxillofacial Surgery; Affiliated Zhongshan Hospital; Sun Yat-sen University; Zhongshan Guangdong China
2. Department of Oral and Maxillofacial Surgery; Fifth Affiliated Hospital; Sun Yat-sen University; Zhuhai Guangdong China
3. Department of Medicine Intensive Care Unit; Affiliated Zhongshan Hospital; Sun Yat-sen University; Zhongshan Guangdong China
4. Department of Oral and Maxillofacial Surgery; Guanghua School of Stomatology; Hospital of Stomatology; Sun Yat-sen University; Guangzhou Guangdong China