Efficacy of Shugan Hewei Therapy for Chronic Atrophic Gastritis: A Systematic Review and Meta-Analysis oleh Jing-Bin Niu, Xiao Gai, De-Cai Yang, Yi-Xin Zheng, Yang Cao, Chun-Mei Zhu, Peng Qian, Hai-Xia Yan, Hua-Ling Song, Guo-Ping Liu, Su Lin