1. Department of Gastroenterology Changhai Hospital Naval Military Medical University No. 168 Changhai Road Shanghai 200433 P. R. China
2. Department of Gastroenterology Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine No. 197, Rui Jin Er Road Shanghai 200025 P. R. China
3. School of Materials and Chemistry University of Shanghai for Science and Technology No. 516 Jungong Road Shanghai 200093 P. R. China
4. Shanghai Collaborative Innovation Center of Energy Therapy for Tumors University of Shanghai for Science and Technology No. 516 Jungong Road Shanghai 200093 P. R. China