Correlation of homocysteine，Nterminal Btype natriuretic peptide， structure and #br# function of  left ventricular   in elderly patients with chronic heart failure
Wang Zichen， Wei Zhanyun， He Jingyu， Tan Jing， Hua Qi
Clinical Focus . 2016, (6): 644 -648 .  DOI: 10.3969/j.issn.1004-583X.2016.06.014