Gastrointestinal cancer: lessons for the primary care physician.
D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D003131:Combined Modality Therapy; D005770:Gastrointestinal Neoplasms / Q000473:pathology / Q000628:therapy*; D006801:Humans; D009367:Neoplasm Staging; D011379:Prognosis