1. Department of Molecular Medicine, University of Malaya, Kuala Lumpur, Malaysia.
2. Department of Genetics, Institute of Biological Science, University of Malaya, Kuala Lumpur, Malaysia.
3. University Hospital, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia.
4. Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia.