Understanding the Basics of Linear Endoscopic Ultrasound: A Step-by-Step Guide to Anatomy and Orientation. - Chavan, Radhika; Quintini, Dario; Gandhi, Chaiti; Giri, Suprabhat; Nabi, Zaheer; Lakhtakia, Sundeep; Rajput, Sanjay (Journal of Digestive Endoscopy, 2025)