Schwartzberg, L. S., Franco, S. X., Florance, A., O'Rourke, L., Maltzman, J., & Johnston, S. (2010). Lapatinib plus Letrozole as First-Line Therapy for HER-2(+) Hormone Receptor–Positive Metastatic Breast Cancer. AlphaMed Press.

Schwartzberg, Lee S., Sandra X. Franco, Allison Florance, Lisa O'Rourke, Julie Maltzman, ja Stephen Johnston. Lapatinib Plus Letrozole As First-Line Therapy for HER-2(+) Hormone Receptor–Positive Metastatic Breast Cancer. AlphaMed Press, 2010.

Schwartzberg, Lee S., et al. Lapatinib Plus Letrozole As First-Line Therapy for HER-2(+) Hormone Receptor–Positive Metastatic Breast Cancer. AlphaMed Press, 2010.