N Durisala1, V Manchaiah2,3,4, S Granberg5,6, K Möller5,6. 1. Department of Otorhinolaryngology, Tan Tock Seng Hospital, Singapore. 2. Department of Speech and Hearing Sciences, Lamar University, Beaumont, TX, USA. 3. Department of Behavioral Sciences and Learning, The Swedish Institute for Disability Research, Linköping University, Linköping, Sweden. 4. Audiology India, Mysore, India. 5. The Swedish Institute for Disability Research (SIDR), School of Health Sciences, Örebro University, Örebro, Sweden. 6. Audiological Research Center, Örebro University Hospital, Örebro, Sweden.