Clark PE, Hall MC, Borden LS, Miller AA, Hu JJ, Lee WR, Stindt D, D'Agostino R, Lovato J, Harmon M, Torti FM. Phase I-II prospective dose-escalating trial of lycopene in patients with biochemical relapse of prostate cancer after definitive local therapy. Urology. 2006 Jun; 67(6):1257-61.