Höpfner, M., Sutter, A. P., Gerst, B., Zeitz, M., & Scherübl, H. (2003). A novel approach in the treatment of neuroendocrine gastrointestinal tumours. Targeting the epidermal growth factor receptor by gefitinib (ZD1839). Nature Publishing Group.

Höpfner, M., A P. Sutter, B. Gerst, M. Zeitz, and H. Scherübl. A Novel Approach in the Treatment of Neuroendocrine Gastrointestinal Tumours. Targeting the Epidermal Growth Factor Receptor By Gefitinib (ZD1839). Nature Publishing Group, 2003.

Höpfner, M., et al. A Novel Approach in the Treatment of Neuroendocrine Gastrointestinal Tumours. Targeting the Epidermal Growth Factor Receptor By Gefitinib (ZD1839). Nature Publishing Group, 2003.