1. Center of Burn & Plastic and Wound Healing Surgery, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, P.R. China
2. Department of Obstetrics and Gynecology, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, P.R. China
3. Institute of Cardiovascular Disease, Key Lab for Arteriosclerology of Hunan, International Joint Laboratory for Arteriosclerotic Disease Research of Hunan, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, P.R. China