పరిశోధన వ్యాసం
                  Letrozole and Fulvestrant Combination in Second Line or More for Estrogen Receptor Positive Metastatic Breast Cancer; Efficacy and Predictive Factors of Response
                  
                      -  M.S. Copur, A.M. Obermiller R, Ramaekers, M. Bolton, B. Luebbe, S. Schneider, J. Goering, W. Marsh, D. Novinski, K. Mleczko, S. Woodward, B. Keenportz, S. Frankforter and Max Norvell