> For the complete documentation index, see [llms.txt](https://ncdcadmin.gitbook.io/casestudy/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ncdcadmin.gitbook.io/casestudy/01./undefined-7/cea-ca19-9-afp.md).

# 위암환자의 혈청 CEA, CA19-9 및 AFP에 관한 연구