Application of reasonable dosage of single spinal anesthesia with isobaric ropivacaine on block in elder patients underwent daytime anorectal surgery and its safety evaluation
LIN Hua-yang|LIN Jie|RAO Fu-dong|YANG Xi-xin|CHEN Gang|LIN Wei|LU Xi
Journal of Jilin University(Medicine Edition) . 2012, (6): 1196 -1200 .