1. Postgraduate Institute of Medicine, University of Colombo, Colombo, Sri Lanka.
2. Colombo North Teaching Hospital, Ragama, Sri Lanka.
3. Health Unit, Bandaranaike International Airport, Katunayake, Sri Lanka.
4. District General Hospital, Negombo, Sri Lanka.
5. Department of Applied Nutrition, Wayamba University of Sri Lanka, Kuliyapitiya, Sri Lanka.
6. Nutrition Clinical Nutrition and Metabolism, Department of Public Health and Caring Science, Faculty of Medicine, Uppsala University, Uppsala, Sweden.
7. Department of Women's and Children's Health, Uppsala University, Uppsala, Sweden.
8. Department of Community Medicine, University of Colombo, Colombo, Sri Lanka.
9. Department of Paediatrics, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka.