ORLUWENE, C.; OPURUM, H. Comparison of mean prostate-specific antigen (PSA) values between sexually active males and age-matched celibate males. Journal of Biomedical Investigation, [S. l.], v. 7, n. 2, 2011. DOI: 10.4314/jbi.v7i2.65849. Disponível em: https://www.ajol.info/index.php/jbi/article/view/65849. Acesso em: 23 oct. 2026.