Diagnostic Performance of the Eustachian Tube Dysfunction Questionnaire-7 (ETDQ-7) in Predicting Objective Eustachian Tube Patency Among Patients with Chronic Rhinosinusitis: A Cross-Sectional Analytical Study at a Tertiary Referral Hospital in Bali, Indonesia. Open Access Indonesian Journal of Medical Reviews, v. 6, n. 6, p. 590–605, 25 Nov.2026.