Two novel mutations on exon 8 and intron 65 of COL7A1 gene in two Chinese brothers result in recessive dystrophic epidermolysis bullosa. oleh Ying Lin, Xue-Jun Chen, Wei Liu, Bo Gong, Jun Xie, Jun-Hao Xiong, Jing Cheng, Xi-Ling Duan, Zhao-Chun Lin, Lu-Lin Huang, Hui-Ying Wan, Xiao-Qi Liu, Lin-Hong Song, Zheng-Lin Yang