3) WHO. Environmental Health Criteria 88: Polychlorinated Dibenzo-para-dioxins and Dibenzofurans: Geneva: WHO; 1989.
4) van den Berg M, Birnbaum L, Bosveld ATC, Brunström B, Cook P, Feeley M, et al. Toxic Equivalency Factors (TEFs) for PCBs, PCDDs, PCDFs for Humans and Wildlife. Environ Health Perspect 1998; 106: 775-792.