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Application effect of ultrasound -guided transversus abdominis plane block with Ropivacaine for postoperative analgesia in laparoscopic gastrectomy for gastric cancer
LIU Guang LAO Jingmao▲#br#
Department of Gastrointestinal Surgery,the First People's Hospital of Qinzhou,Guangxi Zhuang Autonomous Region,Qinzhou 535000,China.
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