Department of Medicine,Faculty of Medicine, Universitv of Malaya, Malavsia;
Department of Pathology,Faculty of Medicine, Universitv of Malaya, Malavsia;
Department of Medicine,Faculty of Medicine, Universitv of Malaya, Malavsia;
Department of Medicine,Faculty of Medicine, Universitv of Malaya, Malavsia;
Department of Medicine,Faculty of Medicine, Universitv of Malaya, Malavsia;
Department of Surgery,Faculty of Medicine, Universitv of Malaya, Malavsia;
Pharmacy, University Hospital,Faculty of Medicine, Universitv of Malaya, Malavsia;
GI Research Unit, Faculty of Medicine, Universitv of Malaya, Malavsia;