Carcinoma of the penis: the value of proliferating cellular nuclear antigen (PCNA) - Martins, Antonio Carlos Pereira; Faria, Sandro Mendonça de; Llorach Velludo, Maria Angeles Sanches; Cologna, Adauto José; Suaid, Haylton Jorge; Tucci Júnior, Silvio (Brazilian Journal of Urology, 2000)