Correlation between work process-related exposure to polycyclic aromatic hydrocarbons and urinary levels of alpha-naphthol, beta-naphthylamine and 1-hydroxypyrene in iron foundry workers. - Hansen AM; Omland O; Poulsen OM; Sherson D; Sigsgaard T; Christensen JM; Overgaard E (International archives of occupational and environmental health, 1994)