<p>Telomerase in the human organism, Kathleen Collins and James R Mitchella, [<a href="http://www.nature.com/onc/journal/v21/n4/full/1205083a.html]">http://www.nature.com/onc/journal/v21/n4/full/1205083a.html</a></p>

<p>[<a href="https://ghr.nlm.nih.gov/condition/hutchinson-gilford-progeria-syndrome]">https://ghr.nlm.nih.gov/condition/hutchinson-gilford-progeria-syndrome</a></p>

<p>[<a href="http://www.cancerresearchuk.org/health-professional/cancer-statistics/mortality/age#heading-Two]">http://www.cancerresearchuk.org/health-professional/cancer-statistics/mortality/age#heading-Two</a></p>

<p>[<a href="http://www.nature.com/news/crispr-gene-editing-is-just-the-beginning-1.19510]">http://www.nature.com/news/crispr-gene-editing-is-just-the-beginning-1.19510</a></p>

<p>[<a href="https://www.jax.org/news-and-insights/jax-blog/2014/march/pros-and-cons-of-znfs-talens-and-crispr-cas]">https://www.jax.org/news-and-insights/jax-blog/2014/march/pros-and-cons-of-znfs-talens-and-crispr-cas</a></p>