腹腔镜联合胃镜改良Heller术加Dor胃底折叠术治疗7例贲门失弛缓症的临床研究
복강경연합위경개량Heller술가Dor위저절첩술치료7례분문실이완증적림상연구
Clinical study on the effect of the laparoscopic combined with modified heller-dor operation on achalasia of the cardia
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