Graff JN, Baciarello G, Armstrong AJ, Higano CS, Iversen P, Flaig TW, Forer D, Parli T, Phung D, Tombal B, Beer TM, Sternberg CN. Efficacy and safety of enzalutamide in patients 75 years or older with chemotherapy-naive metastatic castration-resistant prostate cancer: results from PREVAIL. Ann Oncol. 2016 Feb; 27(2):286-94.