Watson, Rabindra R Yield and performance characteristics of endoscopic ultrasound-guided fine needle aspiration for diagnosing upper GI tract stromal tumors. [electronic resource] - Digestive diseases and sciences Jun 2011 - 1757-62 p. digital Publication Type: Journal Article ISSN: 1573-2568 Standard No.: 10.1007/s10620-011-1646-6 doi Subjects--Topical Terms: AgedBiopsy, Fine-Needle--methodsFemaleGastrointestinal Stromal Tumors--diagnosisGastroscopy--methodsHumansMaleUltrasonography