1. Department of Gastrointestinal Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350004, P.R. China
2. Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350004, P.R. China
3. Department of Vascular and Endovascular Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350004, P.R. China