A组患者初始症状多表现为无痛性黄疸（53.8%），而B组患者初始症状多表现为非黄疸症状（90.9%）。

The 53.8%primary complaint was painless jaundice in group A, and 90.9% was non-jaundice in group B.

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A组患者初始症状多表现为无痛性黄疸（53.8%），而B组患者初始症状多表现为非黄疸症状（90.9%）。

The 53.8%primary complaint was painless jaundice in group A, and 90.9% was non-jaundice in group B.

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