Construction and results of a comprehensive index for gastrointestinal health monitoring in China: a nationwide studyResearch in context oleh Zhi-Yuan Cheng, Ye Gao, Fan Mao, Han Lin, Ying-Ying Jiang, Ting-Ling Xu, Chang Sun, Lei Xin, Zhao-Shen Li, Rong Wan, Mai-Geng Zhou, Luo-Wei Wang, Mai-Geng Zhou, Ya-Min Bai, Li-Min Wang, Cheng-Shi Yu, Ying-Ying Jiang, Fan Mao, Wen-Qiang Wei, Wan-Qing Chen, Yu-Hui Zhang, Jian-Ping Hu, Zhao-Shen Li, Luo-Wei Wang, Zhen-Dong Jin, Yi-Qi Du, Min-Hu Chen, Ying-Lian Xiao, Ren Mao, Xiao-Hua Hou, Jia-Ming Qian, Hong Yang, Li-Ya Zhou, Nong-Hua Lv, Duo-Wu Zou, Bang-Mao Wang, Bin Lv, Jing-Yuan Fang, Kai-Chun Wu, Yan-Qing Li, Xiao-Ping Zou