Predictive Role of Ki-67 and Proliferative-Cell Nuclear Antigen (PCNA) in Recurrent Cholesteatoma - Ela Araz Server; Çiğdem Kalaycık Ertugay; Sevim Baykal Koca; Ecem Sevim Longur; Özgür Yiğit; Hasan Demirhan; Yasemin Çakır (Journal of International Advanced Otology)