1. Institute Burn Research; State Key Lab of Trauma, Burns and Combined Injury; Southwest Hospital and Third Military Medical University; Chongqing 400038 China
2. Department of Mechanical Engineering; University of Manitoba and Manitoba Institute for Materials; Winnipeg Manitoba R3T 2N2 Canada
3. Jiangsu Province Hospital Affiliated with Nanjing Medical University; Nanjing 210029 China
4. Nanfang Hospital; Southern Medical University; Guangzhou 510515 China
5. Department of Orthopedics; West Virginia University; WV 26506-9600 USA