1. Department of Plastic Surgery and Burn Center, Second Affiliated Hospital, Shantou University Medical College, Plastic Surgery Institute of Shantou University Medical College, Shantou, Guangdong, P.R. China.
2. Department of Nephrology, Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, P.R. China.
3. School of Basic Medicine, Tianjin Medical University, Tianjin, P.R. China.