1. Federal Food, Drug and Cosmetic Act. 21 United States Code, Sec. 321.
2. World Health Organization. Biologicals. www.who.int/biologicals/en. Accessed 17 Feb. 2011.
3. Public Health Service Act, July 1, 1944, Chap. 373, Title III, Sec. 352, 58 Stat. 702, currently codified at 42 United States Code, Sec. 263.