1. Department of Public Health, Faculty of Health and Life Sciences, Daffodil International University, Dhaka, Bangladesh
2. Sheikh Russel National Gastroliver Institute and Hospital (SRNGIH), Government of the People's Republic of Bangladesh, Ministry of Health and Family Welfare, Dhaka, Bangladesh
3. Faculty of Health Science and Medicine, Miltonbridge University, Mogadishu, Somalia
4. Public Health Group, College of Nursing, Midwifery, and Healthcare, University of West London, Brentford, Middlesex, UK
5. Oxford Institute of Population Ageing, University of Oxford, Oxford, UK