Health risk assessment Ecological risk assessment Risk assessment Environmental risk assessment Polychlorinated biphenyls Toxicology Dioxins Toxicology Environmental risk assessment Methodology Carcinogenesis Mathematical models Dose-response relationship (Biochemistry) Ecological risk assessment Planning Environmental health Environmental risk assessment Mathematical models Environmental toxicology Furans Toxicology Health risk assessment Mathematical models Monte Carlo method Tetrachlorodibenzodioxin Toxicology Alpha globulins Aquatic animals Effect of chemicals on Aquatic animals Effect of water pollution on Arsenic Carcinogenicity Arsenic Physiological effect Cancer Diagnosis Cancer Treatment Technological innovations Carcinogens Carcinogens Government policy Carcinogens Health aspects Child development Environmental aspects Monitoring Children Health and hygiene Children Health and hygiene Monitoring