Vilmann, P Endosonographically-guided fine needle aspiration biopsy of malignant lesions in the upper gastrointestinal tract. [electronic resource] - Endoscopy Oct 1993 - 523-7 p. digital Publication Type: Journal Article ISSN: 0013-726X Standard No.: 10.1055/s-2007-1010389 doi Subjects--Topical Terms: Biopsy, Needle--instrumentationEndoscopes, GastrointestinalGastrointestinal Neoplasms--diagnosisHumansUltrasonography--instrumentation