Zoladex and tamoxifen as adjuvant therapy in premenopausal breast cancer: a randomized trial by the Cancer Research Campaign (CRC) Breast Cancer Trials Group, the South-East Sweden Breast Cancer Group, Stockholm Breast Cancer Study Group, and the Gruppo Interdisciplinare Valutazione Interventi in Oncologia (GIVIO). - Rutqvist,L.E. (Proc Am Soc Clin Oncol, 1999)