1. Department of Molecular Medicine, University of Malaya, Kuala Lumpur, Malaysia.
2. Department of Biomedical Science, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia.
3. Department of Biochemistry and Molecular Biology, Faculty of Medicine, Sana'a University, Sana'a, Yemen.
4. Department of Pediatrics, Al-Kuwait University Hospital, Sana'a, Yemen.
5. Department of Biochemistry, Faculty of Medicine, MAHSA University, Kuala Lumpur, Malaysia.