Heyder, N Experimental investigations into the possibility of differentiating early from invasive carcinoma of the stomach by means of ultrasound. [electronic resource] - Endoscopy Nov 1987 - 228-32 p. digital Publication Type: Journal Article ISSN: 0013-726X Standard No.: 10.1055/s-2007-1013019 doi Subjects--Topical Terms: Carcinoma--diagnosisHumansStomach--pathologyStomach Neoplasms--diagnosisUltrasonography