Does data of HCC in TCGA include the HCV or HBV infection status? I've seen some papers say that they had downloaded and selected the tcga data of HCC patients with HCV. But the strange thing is that the clinical data that I've downloaded doesn't include the infection status. So, I am totally confused. If the infection status is contained in the database, where and how to find them exactly? I would be grateful if my problem is solved. Thank you for your attention!