Gomez, H.L., Doval, D.C., Chzvez, M.A., Ang, P.C.-S., Aziz, Z., Nag, S., et al. (2008) Efficacy and Safety of Lapatinib as First-Line Therapy for ErbB2-Amplified Locally Advanced or Metastatic Breast Cancer. Journal of Clinical Oncology, 26, 2999-3005.