article_metadata: Na Zhang Tingting Wang Penghui Wei Jinfeng Zhou Jianjun Li
article_metadata: 10.3389/fonc.2021.631003
article_metadata: Front Oncol
article_metadata: 2021 Jun 30;11:631003.
article_metadata: anesthesia breast cancer regional block severe aortic stenosis ultrasound guidance
article_metadata: CC BY
article_metadata: https://pubmed.ncbi.nlm.nih.gov/34277398/
article_metadata: Case Reports
article_metadata: PMC8278145
article_metadata: 34277398
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article_metadata: 2021