Department of Plastic Surgery the Second Hospital of Shandong University Jinan Shandong 250033 China;
Department of Plastic Surgery Qilu Hospital of Shandong University Jinan Shandong 250012 China;
Department of Oral and Maxillofacial Surgery Qilu Hospital of Shandong University Jinan Shandong 250012 China;
Institute of Dental Medicine Shandong University Jinan Shandong 250012 China;