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    					| Effect of Sacubitril Valsartan Sodium Tablets Combined with Conventional Treatment on Cardiac Function Reserve in Patients with Pulmonary Heart Disease Complicated with Heart Failure |  
						| WANG Tingting, CHEN Guangtao |  
						| First-author's address: Hainan Provincial Corps Hospital of the Chinese People's Armed Police Force, Haikou 570000, China |  
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