To Investigate the diagnostic value of fine needle aspiration and biopsy under the guidance of endoscopic ultrasonography for the upper gastrointestinal diseases.
探讨内镜超声引导下细针穿刺活检在上消化道病变中的诊断价值。
To Investigate the diagnostic value of fine needle aspiration and biopsy under the guidance of endoscopic ultrasonography for the upper gastrointestinal diseases.
探讨内镜超声引导下细针穿刺活检在上消化道病变中的诊断价值。
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