1. School of Medicine; Tsinghua University; Beijing China
2. First Hospital of Tsinghua; Beijing China
3. Department of Thermal Engineering, State Key Laboratory of Hydroscience and Engineering; Tsinghua University; Beijing China
4. School of Mechanical Engineering, State Key Laboratory of Tribology; Tsinghua University; Beijing China
5. Department of Surgery; FuWai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College; Beijing China