[1] Univ Kebangsaan Malaysia, Fac Med, Dept Physiol, Kuala Lumpur, Malaysia
[2] Univ Kebangsaan Malaysia, Dept Appl Phys, Fac Sci & Technol, Kuala Lumpur, Malaysia
[3] Univ Kebangsaan Malaysia, Dietet Program, Fac Hlth Sci, Kuala Lumpur, Malaysia
[4] Univ Kebangsaan Malaysia, Fac Med, Dept Med, Gastroenterol Unit, Kuala Lumpur, Malaysia
[5] Univ Kebangsaan Malaysia, GUT Res Grp, Fac Med, Kuala Lumpur, Malaysia