aDepartment of Molecular Biology, Faculty of Resource Science and Technology, Universiti Malaysia Sarawak, Kota Samarahan, Sarawak, Malaysia bDepartment of Pathology, Faculty of Medicine and Health Sciences, Universiti Malaysia Sarawak, Kota Samarahan, Sarawak, Malaysia cUniversiti Kuala Lumpur Royal College of Medicine Perak, Ipoh, Perak, Malaysia