1. Department of Nursing Science; Faculty of Medicine; University of Malaya; Kuala Lumpur Malaysia
2. Department of Nursing Science; Faculty of Medicine; University Malaya Medical Centre; Kuala Lumpur Malaysia
3. Department of Biomedical Imaging; Faculty of Medicine; University of Malaya; Kuala Lumpur Malaysia
4. Department of Social and Preventive Medicine; Faculty of Medicine; University of Malaya; Kuala Lumpur Malaysia
5. Department of Medicine; Faculty of Medicine; University of Malaya; Kuala Lumpur Malaysia