©  Copyright 2020: Augustine G. DiGiovanna, Ph.D., Salisbury University, Maryland
The materials on this site are licensed under CC BY-NC-SA 4.0

Attribution-NonCommercial-ShareAlike
This license requires that reusers give credit to the creator. It allows reusers to distribute, remix, adapt, and build upon the material in any medium or format, for noncommercial purposes only. If others modify or adapt the material, they must license the modified material under identical terms.
Previous print editions of the text Human Aging: Biological Perspectives are © Copyright 2000, 1994 by The McGraw-Hill Companies, Inc. and 2020 by Augustine DiGiovanna.
View License Deed | View Legal Code