[Diagnostic value of endoscopy in the diagnosis of gastrointestinal cancer].
D000328:Adult; D000367:Age Factors; D000368:Aged; D005260:Female; D005770:Gastrointestinal Neoplasms / Q000175:diagnosis*; D005773:Gastroscopy; D006801:Humans; D008297:Male; D008875:Middle Aged; D012737:Sex Factors
Valor de la endoscopia en el diagnóstico del cáncer gástrico.