Aromatase inhibitors as potential cancer chemopreventives. - Kelloff,G.J.; Lubet,R.A.; Lieberman,R.; Eisenhauer,K.; Steele,V.E.; Crowell,J.A.; Hawk,E.T.; Boone,C.W.; Sigman,C.C. (Cancer Epid Biomarkers & Prev, 1998)