1. Department of Geriatric Health, School of Health, Mazandaran University of Medical Sciences, Sari 48157-33971, Iran
2. Iranian Research Center on Aging, The University of Social Welfare and Rehabilitation Sciences, Tehran 19857-13871, Iran
3. Malaysian Research Institute on Ageing, University Putra Malaysia, Serdang 43400, Selangor, Malaysia
4. Department of Audiology, The University of Social Welfare and Rehabilitation Sciences, Tehran 19857-13871, Iran