Prostate cancer early detection. Clinical practice guidelines in oncology. - Kawachi MH; Bahnson RR; Barry M; Carroll PR; Carter HB; Catalona WJ; Epstein JI; Etzioni RB; Hemstreet GP 3rd; Howe RJ; Kopin JD; Lange PH; et al. (Journal of the National Comprehensive Cancer Network : JNCCN, 2007)