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Advice on how to improve the visibility of ultrasound images in TAPA/M-TAPA block

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  • Contributors KY contributed to the writing of the manuscript, conceptualized the method and obtained the data. TH and MS helped to obtain the data and draft the manuscript. KK conceptualized the method. SI helped to draft the manuscript. All authors have read and approved the manuscript.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.