Epidemiological and clinical features of hypertrophic scar and keloid in Chinese college students: A university-based cross-sectional survey oleh An-Hao Liu, Xiao-Lu Sun, Di-Zhi Liu, Fan Xu, Shi-Jie Feng, Shi-Yu Zhang, Lu-Zhou Li, Jia-Li Zhou, Yi-Ting Wang, Li Zhang, Xiao Lin, Shu-Bin Gao, Xin Yue, Xiao-Ming Liu, Guang-Hui Jin, Bin Xu