Utility of preoperative serum prostate specific antigen concentration and biopsy Gleason score in predicting risk of pelvic lymph node metastases in prostate cancer. - Narayan,P..; Fournier,G..; Gajendran,V..; Leidich,R..; Lo,R..; Wolf,JS..; Jacob,G..; Nicolaisen,G..; Palmer,K..; Freiha,F.. (Urology, 1994)