1. Department of Burns and Plastic Surgery, The Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong 515041, P.R. China
2. The Department of Hepatobiliary Oncology of Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou, Guangdong 510060, P.R. China
3. Department of Plastic Surgery, The Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, P.R. China
4. Department of Thyroid and Breast Surgery, The Fifth Affiliated Hospital of Sun Yat sen University, Zhuhai, Guangdong 519000, P.R. China