@article{yaping lu2025of,
  title={Evaluation of ropivacaine in external oblique intercostal block for analgesia in major upper abdominal surgery: a randomized controlled clinical trial},
  author={huicong hu,jing li,xin yan,li zhou,yaping lu},
  journal={Signa Vitae},
  volume={21},
  number={6},
  pages={65--73},
  doi = {10.22514/sv.2025.075},
  year={2025}
}