1. Departments of 1Surgery,
2. Department of Geriatrics, First Affiliated Hospital of Nanjing Medical University, Nanjing, China;
3. Department of Emergency Medicine, Brain Research Laboratory, Emory University School of Medicine, Atlanta, Georgia; and
4. Internal Medicine,
5. Physiology, and
6. Biometry and Medical Computing, East Tennessee State University, Johnson City, Tennessee;
7. Animal Model Research Center, Nanjing University, Nanjing, China