Fonseca, F.P. da, Lopes, A., Melarato Jr., W.A., Bachega Jr., W., Marques, M.J.B. e Pereira, R.N. 1998. Evaluation of prostate specific antigen in the prognosis of patients with advanced prostate cancer. São Paulo Medical Journal. 116, 5 (set. 1998), 1798–1802.