Practical Geriatrics
Effect of noninvasive positivepressure respiration on serum Nterminal probrain natriuretic peptide in elderly patients with chronic heart failure
GUO Hui-Feng, YANG Jing-Ye, ZHANG Xing-Liang, LI Sheng-Qian
Practical Geriatrics . 2010, (2): 144 -146 .