Conditions: Oesophageal Tumour; Gastric Tumours; Duodenal Tumours; Colon Tumours; Rectal Tumours
Sponsors: Torsten Beyna
Enrolling by invitation Conditions: Oesophageal Tumour; Gastric Tumours; Duodenal Tumours; Colon Tumours; Rectal Tumours
Sponsors: Torsten Beyna
Enrolling by invitation
