Treatment of intracranial arterial lesions with covered stentsZHANG Hong-qi, ZHI Xing-long, ZHANG Peng, LI Meng, JI Xun-ming, MIAO Zhong-rong, WANG Ya-bing, LU Xiao-jian, SHI Huai-zhang, QI Da-yong, LIU Jiang, XIAO Quan, QIN Xiao-hong, SONG Qing-bin, WANG Yu-lin, ZHANG Hong, LING Feng