Polychlorinated Dibenzodioxins - analysis, Species Specificity, Dibenzofurans, Polychlorinated, Male, Water Pollutants, Chemical - analysis, Liver - chemistry, Polychlorinated Dibenzodioxins - analogs & derivatives, Animals, Benzofurans - analysis, Digestive System - chemistry, Bivalvia, Norway, Fishes, Dioxins - analysis