AUTHOR=Matos Margarida TITLE=A Question Never Comes Alone: Comments on ‘What is Aging?’ JOURNAL=Frontiers in Genetics VOLUME=3 YEAR=2012 URL=https://www.frontiersin.org/journals/genetics/articles/10.3389/fgene.2012.00150 DOI=10.3389/fgene.2012.00150 ISSN=1664-8021