Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...

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A breast biopsy may use local anesthesia to numb the area. Fine needle aspiration is quick and usually doesn't need general anesthesia. Core needle biopsy is used when breast cancer is suspected.

Dry needling is used to relieve muscle pain and improve range of motion. It involves inserting thin needles into muscle areas called trigger points. Possible side effects of dry needling include ...

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