1. Department of Pharmaceutical Life Science, Faculty of Pharmacy, University Malaya, Kuala Lumpur, Malaysia
2. Department of Clinical Pharmacy and Pharmacy Practices, Faculty of Pharmacy, University Malaya, Kuala Lumpur, Malaysia
3. Department of Psychological Medicine, University Malaya Centre for Addiction Science (UMCAS), Faculty of Medicine, University Malaya, Kuala Lumpur, Malaysia
4. Ministry of Health Malaysia, Wilayah Persekutuan Putrajaya, Malaysia
5. Department of Psychiatry, Universiti Kebangsaan Malaysia Medical Centre (UKMMC), Kuala Lumpur, Malaysia
6. Kuliyyah of Nursing, International Islamic University of Malaysia (IIUM), Kuantan, Malaysia