Effect and hemodynamics of a low dose dexmedetomidine on ropivacaine subarachnoid block
YANGGuang-yao,WANG Hong,SONGTie-ying,MAPeng-yu,GU Kun-feng
Journal of Hebei Medical University . 2016, (1): 50 -53 .  DOI: 10.3969/j.issn.10073205.2016.01.014