Effects of Beta-Blockers on Heart Failure with Preserved Ejection Fraction: A Meta-Analysis Liu, Feng ; Chen, Yanmei ; Feng, Xuguang ; Teng, Zhonghua ; Yuan, Ye ; Bin, Jianping Abstract Publication: PLoS ONE Pub Date: March 2014 DOI: 10.1371/journal.pone.0090555 Bibcode: 2014PLoSO...990555L