1. Faculty of Pharmacy and Health Sciences, Universiti Kuala Lumpur-Royal College of Medicine Perak (UniKL-RCMP), Ipoh, Perak, Malaysia;
2. Centre for Drug Research, Universiti Sains Malaysia (USM), Minden, Pulau Pinang, Malaysia;
3. National Poison Centre, Universiti Sains Malaysia (USM), Minden, Pulau Pinang, Malaysia