Chinese Proprietary Medicine Xianling Gubao Capsule for Osteoporosis: A Systematic Review and Meta-Analysis of Randomized Clinical Trials oleh Bai-Ru Cheng, Rou-Yan Wu, Qin-Yang Gao, Kai-Xin Jiang, Shuang-Sang Li, Shi-Hao Qi, Ming-Yi Yuan, Jian-Ping Liu