A meta-analysis of countious femoral nerve block versus continuous epidural analgesia after total knee arthroplasty
Yuan Zhi-min, Wei Jian-tong, Wen Jing-rong, Yang Sen, Quan Dong-he
Chinese Journal of Tissue Engineering Research . 2015, (35): 5728 -5734 .  DOI: 10.3969/j.issn.2095-4344.2015.35.028