Polycyclic aromatic hydrocarbons (PAHs) at traffic and urban background sites of northern Greece: source apportionment of ambient PAH levels and PAH-induced lung cancer risk - Evangelia Manoli; Athanasios Kouras; Olga Karagkiozidou; Georgios Argyropoulos; Dimitra Voutsa; Constantini Samara (Environmental Science and Pollution Research, 2016)