1 Obstetrics & Gynaecology Department, MARA University of Technology (UiTM), Sungai Buloh, Malaysia.
2 Department of Obstetrics & Gynaecology, Maternal-Fetal-Medicine Unit, Hospital Universiti Teknologi MARA (UiTM), Puncak Alam, Malaysia.
3 Cardiology Unit, Cardiac Vascular and Lung Research Institute (CaVaLRI), Pusat Perubatan Universiti Teknologi MARA, Sungai Buloh Campus, Jalan Hospital, Sungai Buloh, Malaysia.