title: [Gastrointestinal tumors. Foreward].
authors: Hans-Joachim
authors: HJ
authors: Schmoll
authors: Wolff
authors: W
authors: Schmiegel
mesh_terms: D005770:Gastrointestinal Neoplasms / Q000175:diagnosis* / Q000628:therapy*; D006801:Humans; D008495:Medical Oncology / Q000639:trends*