@article{zheng_wang_ma_cheng_cao_shao_2020,  title={Comparison of the effect of ultrasound-guided thoracic paravertebral nerve block and intercostal nerve block for video-assisted thoracic surgery under spontaneous-ventilating anesthesia},  volume={66},  ISSN={0104-4230},  url={https://doi.org/10.1590/1806-9282.66.4.452},  DOI={10.1590/1806-9282.66.4.452},  number={4},  journal={Revista da Associação Médica Brasileira},  publisher={Associação Médica Brasileira},  author={Zheng, Yongfeng and Wang, Hong and Ma, Xiaodong and Cheng, Zheng and Cao, Weibao and Shao, Donghua},  year={2020},  month={Apr},  pages={452–457} }