Acupuncture as an adjunctive therapy for gastric ulcer: A modified Delphi consensus study oleh Lu-qiang Sun, Fang-li Luo, Shuai Chen, Qian-hua Zheng, Lu Wang, Yu-jun Hou, Kai Wang, Jun-peng Yao, Xiang-yun Yan, Yun-zhou Shi, Ying Li