1. Department of Paediatrics, Faculty of Medicine, Universiti Teknologi MARA, Sungai Buloh, Malaysia
2. Institute for Pathology, Laboratory and Forensic Medicine (I-PPerForM), Universiti Teknologi MARA (UiTM), Sungai Buloh, Malaysia
3. Division of Paediatric Endocrinology, Department of Paediatrics, Faculty of Medicine, University Malaya, Kuala Lumpur, Malaysia
4. University Malaya Paediatric and Child Health Research Group, University Malaya, Kuala Lumpur, Malaysia