1. Department of Medicine, Faculty of Medicine, University Malaya, Lembah Pantai, Kuala Lumpur, Malaysia
2. Klinik Pakar C N Chin, Psychiatric, Kuala Lumpur, Malaysia
3. Department of Pharmacy, United Lincolnshire Hospitals NHS Trust, Lincolnshire, United Kingdom
4. Department of Pediatrics, Faculty of Medicine, University Malaya, Lembah Pantai, Kuala Lumpur, Malaysia
5. Department of Medicine, Barwon Health Palliative Care Program, Geelong, Victoria, Australia