1. Forensic Science Programme, School of Health Sciences, Universiti Sains Malaysia, Kubang Kerian, Malaysia
2. Division of Health And Applied Sciences, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand
3. Department of Chemistry, Narcotics Division, Forensic Science Analysis Centre, Jalan Sultan, Petaling Jaya, Malaysia
4. Center of Excellence for Trace Analysis and Biosensors (Tab-coe), Prince of Songkla University, Hat Yai, Songkhla, Thailand
5. Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand