Xin, Ying Randomized clinical trial to evaluate the outcome of partial canal wall preserved tympanomastoidectomy. [electronic resource] - Acta oto-laryngologica May 2019 - 409-414 p. digital Publication Type: Journal Article; Randomized Controlled Trial ISSN: 1651-2251 Standard No.: 10.1080/00016489.2019.1578412 doi Subjects--Topical Terms: AdultChronic DiseaseEar Canal--surgeryFemaleHumansMaleMastoidectomy--methodsMiddle AgedOtitis Media--surgeryYoung Adult