1.State Key Laboratory of Trauma,Burns and Combined Injury ,Department of Shock and 'Transfusion,ResearchInstitute of Surgery ,Daping Hospital,Army Medical University,Chongqing 400042,China.2. State Key Laboratoryof Trauma,Burms and Combined Injury,Department of Weapon Bioeffect Assessment,Research Institute of Surgery, Daping Hospital ,Army Medical University ,Chongqing 400042