目的评价内镜下逆行胰胆管造影(ERCP)对胆管系统结石诊断和治疗的价值。
Objective To evaluate the value of ERCP in diagnosing and treatment of calculus of bile duct.
当期权处于价内状态时，可以说这种期权具有的内在价值。
When an option is 'in the money' it is said to have intrinsic value.
目的评价内镜超声检查（EUS）对胃底隆起性病变的诊断价值。
Objective To evaluate the endoscopic ultrasonography (EUS) in diagnosis of eminent lesion of gastric fundus.
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