Bibliography
Chapter One: Human Ageing, Longevity, and Life Extension. 1 Aging, Wiktionary , pp. 1-2, https://en.wiktionary.org/wiki/aging#English ; accessed on January 20, 2017. 2. Ageing , Wikipedia, p. 1 , https://en.wikipedia.org/wiki/Ageing ; accessed on January 20, 2017. 3. Ibid. 4. The Hallmarks of Aging , by Carlos Lopez-Otin et al., Cell, Volume 153, Issue 6, June 6, 2013, p. 1.,http://www.cell.com/cell/fulltext/S0092-8674(13000645-4#, accessed on February 20, 2017. 5. Longevity, Wikipedia, p. 1., https://en.wikipedia.org/wiki/Longevity ; accessed on January 6, 2017. 6. Definition of Death ,MedicineNet.com , p. 1., http://www.medicinenet.com/script/main/art.asp?articlekey=33438 ; accessed on January 20, 2017. 7. Life extension , Wikipedia , p. 1., https://en.wikipedia.org/wiki/Life_extension ; accessed on January 20, 2017 . 8. Life expectancy, Wikipedia, p. 1., https:en.wikipedia.org/wiki/Life_expectancy , accessed on January 24, 2017. 9. Ibid., p. 10. 10. Ibid., 7., p 2. 11. Ibid., 7, pp