1. Department of Primary Care Medicine, Faculty of Medicine, Universiti Teknologi MARA, Sungai Buloh Campus, Sungai Buloh, Selangor, Malaysia
2. Cardiovascular and Lungs Research Institute (CaVaLRI), Hospital Al-Sultan Abdullah UiTM, Sungai Buloh Campus, Sungai Buloh, Selangor, Malaysia
3. Institute of Pathology, Laboratory and Forensic Medicine (I-PPerForM), Universiti Teknologi MARA, Sungai Buloh, Selangor, Malaysia
4. Department of Community Medicine, School of Medicine, International Medical University, Bukit Jalil, KL, Malaysia
5. College of Health and Medical Techniques, Almaaqal University, Basrah, Iraq