Cetuximab plus cisplatin–5-fluorouracil versus cisplatin–5-fluorouracil alone in first-line metastatic squamous cell carcinoma of the esophagus: a randomized phase II study of the Arbeitsgemeinschaft Internistische OnkologieSylvie Lorenzen, Florian Lordick, Dirk Arnold et al.|Annals of Oncology|2009Cited by 241