1. Department of Psychiatry, Faculty of Medicine, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur 56000, Malaysia
2. Hospital Canselor Tuanku Muhriz, Jalan Yaacob Latif, Bandar Tun Razak, Kuala Lumpur 56000, Malaysia
3. Department of Psychiatry & Mental Health, Sarawak General Hospital, Ministry of Health Malaysia, Sarawak 93586, Malaysia
4. Department of Psychiatry and Mental Health, Hospital Keningau, Peti Surat 11 Jalan Apin-Apin, Keningau 89007, Malaysia