Comparative accuracy of methods used in the diagnosis of gastric cancer.
D003937:Diagnosis, Differential; D005750:Gastric Juice / Q000378:metabolism; D005773:Gastroscopy; D006801:Humans; D010781:Photography; D011859:Radiography; D013274:Stomach Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D013276:Stomach Ulcer / Q000175:diagnosis