1. Cluster for Integrative Physiology and Molecular Medicine (CIPMM), Faculty of Medicine, Royal College of Medicine Perak, Universiti Kuala Lumpur, Jalan Greentown, 30450 Ipoh, Perak, Malaysia.
2. Nutrition Department, Faculty of Medicine, Universitas Sumatera Utara, Indonesia.
3. Department of Anatomy, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia.