Spermidine delays aging in humansFrank Madeo, Didac Carmona-Gutierrez, Oliver Kepp and Guido KroemerAging 10, 2209–11 (2018). DOI: 10.18632/aging.101517Linksdx.doi.orgFull text on PubMed: PMC6128428PMID: 30082504Google Scholar