Yandrapu, Harathi Impact of introduction of endoscopic ultrasound on volume, success, and complexity of endoscopic retrograde cholangiopancreatography in a tertiary referral center. [electronic resource] - Endoscopic ultrasound - 252-256 p. digital Publication Type: Journal Article ISSN: 2303-9027 Standard No.: 10.4103/2303-9027.190922 doi