1. Department of Burn Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, People's Republic of China.
2. Department of Neurosurgery, Nanfang Hospital of Southern Medical University, Guangzhou, People's Republic of China.
3. Department of Burn and Plastic Surgery, Affiliated Hospital of Nantong University, Nantong, People's Republic of China.
4. Department of Plastic Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, People's Republic of China.
5. Department of Chemistry, Portland State University, Portland, USA.