Pathologist Elizabeth Stern tracked the 250 stages of a cell's progression from normal to cancerous, enabling early cancer screening.
Elizabeth Stern. (2013). The Biography Channel website. Retrieved 05:28, May 19, 2013, from http://www.biography.com/people/elizabeth-stern-38623.
Elizabeth Stern. [Internet]. 2013. The Biography Channel website. Available from: http://www.biography.com/people/elizabeth-stern-38623 [Accessed 19 May 2013].
"Elizabeth Stern." 2013. The Biography Channel website. May 19 2013, 05:28 http://www.biography.com/people/elizabeth-stern-38623.
"Elizabeth Stern," The Biography Channel website, 2013, http://www.biography.com/people/elizabeth-stern-38623 [accessed May 19, 2013].
"Elizabeth Stern," The Biography Channel website, http://www.biography.com/people/elizabeth-stern-38623 (accessed May 19, 2013).
Elizabeth Stern [Internet]. The Biography Channel website; 2013 [cited 2013 May 19] Available from: http://www.biography.com/people/elizabeth-stern-38623.
Elizabeth Stern, http://www.biography.com/people/elizabeth-stern-38623 (last visited May 19, 2013).
Elizabeth Stern. The Biography Channel website. 2013. Available at: http://www.biography.com/people/elizabeth-stern-38623. Accessed May 19, 2013.