On the early diagnosis of gastric cancer.
D000368:Aged; D003951:Diagnostic Errors; D005260:Female; D005753:Gastric Mucosa / Q000473:pathology; D006801:Humans; D008297:Male; D009362:Neoplasm Metastasis; D013274:Stomach Neoplasms / Q000175:diagnosis* / Q000473:pathology; D013276:Stomach Ulcer / Q000150:complications; D013997:Time Factors