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journal1  2016, Vol. 23 Issue (5): 342-344    DOI: 10.3969/j.issn.1006-5253.2016.05.007
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Investigation analysis on correlated risk factors of acute upper gastrointestinal bleeding in the elder population
Cai Zhefeng
The First General Surgery Department in the People′s Hospital of Cixi City, Cixi 315300, China
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