M. N. Igwo-Ezikpe, A. A. Osuntoki, O. Awodele, H. S. A. Olasore, O. A. Omoniyi Y.A, and E. C. A. S. Fayeun O.E, “URINARY 1-HYDROXYPYRENE CONCENTRATION AND TOXICITY BIOMARKERS IN ACTIVE AND PASSIVE MALE SMOKERS FROM LAGOS METROPOLIS, NIGERIA”, UJMST, vol. 4, no. 1, pp. 111-128, Jan. 2019.