Chandee, T.; Orrapin, S.; Mahawongkajit, P.; Soonthornkes, N.; Suptongchai, C.; Luangmaneerat, T.; Manuwong, S. Lidocaine Spray versus Other Forms for Local Anesthesia in Upper Gastrointestinal Endoscopy: A Systematic Review and Meta-analysis. Siriraj Med J 2025, 77, 725-737.