The biologic clock: the mitochondria? Author: D Harman Conference/Journal: J Am Geriatr Soc Date published: 1972 Apr 1 Other: Volume ID: 20 , Issue ID: 4 , Pages: 145-7 , Special Notes: doi: 10.1111/j.1532-5415.1972.tb00787.x. , Word Count: 6 PMID: 5016631 DOI: 10.1111/j.1532-5415.1972.tb00787.x