Session information 4.4

O4.4.01 – Complications in Chronic Ear Surgery – a rapport from SwedEar, a Swedish Quality Register – Åsa Bonnard, SE

O4.4.02 – SwedEar: The Swedish Quality Register for Ear Surgery: Developing and expanding a national Quality Register. – Eva Westman, NL

O4.4.03 – The health-related quality of life after mastoid obliteration following canal wall up or canal wall down tympanomastoidectomy: a retrospective analysis – Chiara Erfurt, NL

O4.4.04 – Health-Related Quality of Life after otologic surgical treatment for chronic otitis media – Esther Schouwenaar, NL