1. Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
2. Sime Darby Technology Center, 2 Jalan Tandang, 46050 Petaling Jaya, Selangor, Malaysia
3. UPM-MAKNA Cancer Research Laboratory, Institute of Bioscience, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
4. Pangiran Anak Puteri Rashidah Sa’adatul Bolkiah Institute of Health Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE1410, Brunei Darussalam