Jacobs, Miriam, Rosemary Versteegen, Carol Treasure, and Jennifer Murray. “Addressing Potential Ethical Issues Regarding the Supply of Human-Derived Products or Reagents in in Vitro OECD Test Guidelines”. ALTEX - Alternatives to animal experimentation 36, no. 2 (April 10, 2019): 163-176. Accessed April 25, 2019. https://www.altex.org/index.php/altex/article/view/1251.