1. School of Chemical Sciences, Universiti Sains Malaysia, Penang, Malaysia
2. Department of Pure and Industrial Chemistry, Umaru Musa Yar’adua University, Katsina, Nigeria
3. Department of Biomedical Sciences, Cihan University-Erbil, Erbil, Iraq
4. Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Penang, Malaysia
5. Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Japan
6. School of Physics, Universiti Sains Malaysia, Penang, Malaysia