1. Psychiatric Trainee of the Faculty of Medicine and Health Sciences, Universiti Malaysia Sabah, Sabah, Malaysia, and Department of Psychiatry, Universiti Kebangsaan Malaysia Medical Center, Kuala Lumpur, Malaysia.
2. Senior Lecturer and Psychiatrist, Department of Psychiatry, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Selangor, Malaysia.
3. Psychiatric Trainee at the Department of Psychiatry, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Selangor, Malaysia, and Hospital Kuala Lumpur, Kuala Lumpur, Malaysia.
4. Senior Consultant Psychiatrist of Pantai Hospital Kuala Lumpur, Kuala Lumpur, Malaysia, and Retired Associate Professor of Universiti Putra Malaysia, Kuala Lumpur, Malaysia.
5. Senior Lecturer and Psychiatrist at the Department of Psychiatry, Universiti Kebangsaan Malaysia Medical Center, Kuala Lumpur, Malaysia and Vice President of the Malaysian Psychiatric Association.
6. Associate Professor of Psychiatry, Columbia University Medical Center, New York, and Visiting Professor, Department of Psychiatry, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia.