AUTHOR=Kui Ling , Guo Cheng , Li Shuai Cheng , Yang Jialiang , Tang Min TITLE=Editorial: Computational Methods in Inferring Cancer Tissue-of-Origin and Cancer Molecular Classification JOURNAL=Frontiers in Genetics VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/genetics/articles/10.3389/fgene.2021.644542 DOI=10.3389/fgene.2021.644542 ISSN=1664-8021