Perbandingan Sudut Kemiringan Tuba Eustachius berdasarkan Bidang Ku-Copson pada CT-Scan antara Telinga Normal dan Telinga Otitis Media Supuratif Kronik di RSUPN Cipto Mangunkusumo = Comparison of Eustachian Tube Angle On Ku-Copson Plane In CT-Scan Between Normal And Chronic Suppurative Otitis Media Ear At RSUPN Cipto Mangunkusumo