A Randomized Trial of Letrozole in Postmenopausal Women after Five Years of Tamoxifen Therapy for Early-Stage Breast Cancer

Paul E. Goss, James N. Ingle, Silvana Martino, Nicholas J. Robert, Hyman B. Muss, Martine J. Piccart, Monica Castiglione, Dongsheng Tu, Lois E. Shepherd, Kathleen I. Pritchard, Robert B. Livingston, Nancy E. Davidson, Larry Norton, Edith A. Perez, Jeffrey S. Abrams, Patrick Therasse, Michael J. Palmer, Joseph L. Pater