Department of Molecular Medicine, Faculty of Medicine, University of Malaya Centre for Proteomics Research (UMCPR), University of Malaya, 50603, Kuala Lumpur, Malaysia. Department of Medicine, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia. Product Development and Advisory Services, Malaysian Palm Oil Board, No. 6, Persiaran Institusi, Bandar Baru Bangi, 43000, Kajang, Selangor, Malaysia. Product Development and Advisory Services, Malaysian Palm Oil Board, No. 6, Persiaran Institusi, Bandar Baru Bangi, 43000, Kajang, Selangor, Malaysia. kt.teng@gmail.com.