D. S. Ernst, J. Hanson and P. M. Venner, “Analysis of Prognostic Factors in Men with Metastatic Prostate Cancer. Uro-Oncology Group of Northern Alberta,” Journal of Urology, Vol. 146, No. 2, 1991, pp. 372-376.
 M. S. Soloway, S. W. Hardeman, D. Hickey, et al., “Stratification of Patients with Metastatic Prostate Cancer Based on Extent of Disease on Initial Bone Scan,” Cancer, Vol. 61, No. 6, 1988, pp. 195-202. doi:10.1002/1097-0142(19880101)61:1<195::AID-CNCR2820610133>3.0.CO;2-Y
 J. C. Cheville, D. Tindall, C. Boelter, et al., “Metastatic Prostate Carcinoma to Bone: Clinical and Pathologic Features Associated with Cancer-Specific Survival,” Cancer, Vol. 95, No. 5, 2002, pp. 1028-1036. doi:10.1002/cncr.10788
 R. M. Hoffman, F. D. Gilliland, J. W. Eley, et al., “Racial and Ethnic Differences in Advanced-Stage Prostate Cancer: The Prostate Cancer Outcomes Study,” Journal of the National Cancer Institute, Vol. 93, No. 5, 2001, pp. 388-395. doi:10.1093/jnci/93.5.388
 I. Thompson, C. Tangen, A. Tolcher, et al., “Association of African-American Ethnic Background with Survival in Men with Metastatic Prostate Cancer,” Journal of the National Cancer Institute, Vol. 93, No. 3, 2001, pp. 219-225. doi:10.1093/jnci/93.3.219
 T. A. Wallace, R. L. Prueitt, M. Yi, et al., “Tumor Immunobiological Differences in Prostate Cancer between African-American and European-American Men,” Cancer Research, 68, No. 3, 2008, pp. 927-936. doi:10.1158/0008-5472.CAN-07-2608
 C. M. Tangen, M. H. Hussain, C. S. Higano, et al., “Improved Overall Survival Trends of Men with Newly Diagnosed M1 Prostate Cancer: A SWOG Phase III Trial Experience (S8494, S8894 and S9346),” Journal of Urology, Vol. 188, No. 4, 2012, pp. 1164-1169. doi:10.1016/j.juro.2012.06.046
 T. C. Brand, C. Bermejo, E. Canby-Hagino, et al., “Association of Polymorphisms in TGFB1 and Prostate Cancer Prognosis,” Journal of Urology, Vol. 179, No. 2, 2008, pp. 754-758. doi:10.1016/j.juro.2007.09.020
 A. Berruti, L. Dogliotti, R. Bitossi, et al., “Incidence of Skeletal Complications in Patients with Bone Metastatic Prostate Cancer and Hormone Refractory Disease: Predictive Role of Bone Resorption and Formation Markers Evaluated at Baseline,” Journal of Urology, Vol. 164, No. 4, 2000, pp. 1248-1253. doi:10.1016/S0022-5347(05)67149-2
 J. C. Bailar 3rd, G. T. Mellinger and D. F. Gleason, “Survival Rates of Patients with Prostatic Cancer, Tumor Stage, and Differentiation—Preliminary Report,” Cancer Chemotherapy Reports, Vol. 50, No. 3, 1966, pp. 129-136.
 D. F. Gleason and G. T. Mellinger, “Prediction of Prognosis for Prostatic Adenocarcinoma by Combined Histological Grading and Clinical Staging,” Journal of Urology, Vol. 111, No. 1, 1974, pp. 58-64.
 K. K. Hodge, J. E. McNeal, M. K. Terris and T. A. Stamey, “Random Systematic versus Directed Ultrasound Guided Transrectal Core Biopsies of the Prostate,” Journal of Urology, Vol. 142, No. 1, 1989, pp. 71-74; Discussion 4-5.
 E. Kaplan and P. Meier, “Nonparametric Estimation from Incomplete Observations,” Journal of the American Statistical Association, Vol. 53, No. 282, 1958, pp. 457-481. doi:10.1080/01621 459.1958.10501452
 A. K. Morgans, M. L. Hancock, K. G. Barnette, et al., “Racial Differences in Bone Mineral Density and Fractures in Men Receiving Androgen Deprivation Therapy for Prostate Cancer,” Journal of Urology, Vol. 187, No. 3, 2012, pp. 889-893. doi:10.1016/j.juro.2011.10.136
 D. W. Lin, M. Porter and B. Montgomery, “Treatment and Survival Outcomes in Young Men Diagnosed with Prostate Cancer: A Population-Based Cohort Study,” Cancer, Vol. 115, No. 13, 2009, pp. 2863-2871. doi:10.1002/cncr.24324