Smirnova, Lena, Nicole Kleinstreuer, Raffaella Corvi, Andre Levchenko, Suzanne Fitzpatrick, and Thomas Hartung. “3S - Systematic, Systemic, and Systems Biology and Toxicology”. ALTEX - Alternatives to animal experimentation 35, no. 2 (April 20, 2018): 139-162. Accessed July 19, 2018. https://www.altex.org/index.php/altex/article/view/823.