Sources

http://en.wikipedia.org/wiki/Kristen_Gilbert
http://www.hlntv.com/article/2013/04/01/serial-killers-gilbert-angel-death-ward-c
http://abcnews.go.com/US/story?id=93723
http://www.crimelibrary.com/notorious_murders/angels/female_nurses/10.html
http://vamalpractice.info/sample-page/crime-at-the-va/kristen-gilbert-the-angel-of-death
http://crime.about.com/od/serial/p/kristengilbert2.htm
https://sites.google.com/site/shelbymillerkristengilbert/opening-statements