壮方壮肝逐瘀煎联合骨髓间充质干细胞移植对CCl<sub>4</sub>大鼠肝纤维化的影响-Effects of Zhuangfang Zhuanggan Zhuyu Decoction combined with bone marrow mesenchymal stem cell transplantation on rats with CCl<sub>4</sub>-induced liver fibrosis