1 Social Wellbeing Research Centre, Universiti Malaya, Kuala Lumpur, Malaysia.
2 Department of Social and Preventive Medicine, Faculty of Medicine, Centre for Epidemiology and Evidence-Based, Practice, Universiti Malaya, Kuala Lumpur, Malaysia.
3 Institute for Advanced Studies, Universiti Malaya, Kuala Lumpur, Malaysia.
4 National Population and Family Development Board (LPPKN), Kuala Lumpur, Malaysia.