TY - JOUR TI - Petrous Apex Cholesteatoma Developing After Radical Mastoidectomy AU - Balıkçı, H.H. AU - Özbay, İ. AU - Özkul, H. AU - Şalvız, M. JO - European Archives of Medical Research PY - 2015 VL - 31 SP - 170 EP - 173 DO - 10.5222/otd.2015.1011 ER -