Feasibility of coding-based Charlson comorbidity index for hospitalized patients in China, a representative developing country von Mo, Liyi, Xie, Zhen, Liu, Guohui, He, Qiang, Mo, Zhiing, Wu, Yanhua, Wang, Weji, Ding, Feng, Liao, Yuajiang, Hao, Li, Lu, Chen, Sun, Jin, Xu, Libin, Zhang, Yusheng, Ghappar, Rizwangul, Peng, Hongwei, Wei, Xiaohong, Xie, Jinglie, Chen, Yuanhan, Liang, Xinling

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