The prodrome focuses on the purpose, significance, the former study and the study methods.

绪论主要对研究目的和意义、先行研究及研究方法进行了阐述。

Clinical process divides typical armour hepatitis a phase: is preclinical, prodrome period, is icteric period, convalescence.

典型的甲型肝炎临床过程分四个阶段：潜伏期，前驱症状期，黄疸期，恢复期。

The prodrome of this paper includes main topics, research purpose, researching range and current situation about the relevant research in China and abroad, and the main methods the paper adopted.

在论文的序论中，介绍了论文的主题和研究目的，论文的研究范围，国内外相关领域的研究现状，以及论文研究采用的主要研究方式。