Sirirattanapan J, Chantapan S, Pongsawat S. A Rare Upper Airway Obstruction by Large Hemorrhagic Vocal Polyps. J Med Health Sci [internet]. 2015 Jun. 3 [cited 2026 Oct. 10];22(1):93-8. available from: https://he01.tci-thaijo.org/index.php/jmhs/article/view/58643