Comment on

• A randomized trial of letrozole in postmenopausal women after five years of tamoxifen therapy for early-stage breast cancer.

  Goss PE, Ingle JN, Martino S, Robert NJ, Muss HB, Piccart MJ, Castiglione M, Tu D, Shepherd LE, Pritchard KI, Livingston RB, Davidson NE, Norton L, Perez EA, Abrams JS, Therasse P, Palmer MJ, Pater JL. Goss PE, et al. N Engl J Med. 2003 Nov 6;349(19):1793-802. doi: 10.1056/NEJMoa032312. Epub 2003 Oct 9. N Engl J Med. 2003. PMID: 14551341 Clinical Trial.