1. Department of Health Education, College of Military Preventive Medicine Army Medical University (Third Military Medical University) Chongqing China
2. Center for Disease Control and Prevention of Jiangjin Chongqing China
3. Institute of Combined injury, College of Military Preventive Medicine Army Medical University (Third Military Medical University) Chongqing China
4. GRECC VA Puget Sound Health Care System and University of Washington Seattle Washington USA