Effect of different concentrations of heparin sealing solution in elderly patients with central venous catheter sealing
QIN Ai-hong, DENG Bao-feng, JI Dong-mei, HU Xiao-yu, GAO Mao-long, BI Jing
Practical Geriatrics . 2021, (2): 206 -208 .  DOI: 10.3969/j.issn.1003-9198.2021.02.026