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- 저자 ( Chahyun Oh ) ( Chan Noh ) ( Hongsik Eom ) ( Sangmin Lee ) ( Seyeon Park ) ( Sunyeul Lee ) ( Yong Sup Shin ) ( Youngkwon Ko ) ( Woosuk Chung ) ( Boohwi Hong )
- 주제어 Brachial Plexus Block Diaphragm Incidence Nerve Block Paralysis Phrenic Nerve Propensity Score Retrospective Studies Anesthesia Ultra-sonography