Bibliography
https://ghr.nlm.nih.gov/primer/therapy/genetherapy
http://www.yourgenome.org/facts/what-is-gene-therapy
http://www.mayoclinic.org/tests-procedures/gene-therapy/details/risks/cmc-20243698
http://www.news-medical.net/health/Gene-Therapy-Types.aspx
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3564347/
http://www.biotecharticles.com/Biotech-Research-Article/Types-Of-Gene-Therapy-Advantages- And-Disadvantages-of-Gene-Therapy-1030.html
http://occupytheory.org/list-of-pros-and-cons-of-gene-therapy/