Referanser:
- http://www.homecuresthatwork.com/Slideshow/Top-6-anti-aging-Supplements
- http://www.lifescript.com/Health/Centers/Alzheimers/tips/5_anti-aging_supplements_worth_taking.aspx
- http://Blog.lef.org/2013/10/The-Top-3-anti-aging-Supplements.html
Referanser: