THE ROLE OF ENDOSCOPY AND CYTOLOGY IN THE DIAGNOSIS OF UPPER GASTROINTESTINAL LESIONS.
D003581:Cytodiagnosis; D004724:Endoscopy; D005767:Gastrointestinal Diseases; D005853:Geriatrics; D006801:Humans; D041742:Upper Gastrointestinal Tract
CYTODIAGNOSIS; ENDOSCOPY; GASTROINTESTINAL DISEASES; GERIATRICS