1 Universiti Kebangsaan Malaysia, Faculty of Medicine, Department of Pathology, Jalan Yaacob Latif, Bandar Tun Razak, Kuala Lumpur, Malaysia. tangc@ppukm.ukm.edu.my.
2 Universiti Kebangsaan Malaysia, Faculty of Medicine, Department of Pathology, Jalan Yaacob Latif, Bandar Tun Razak, Kuala Lumpur, Malaysia.
3 Universiti Kebangsaan Malaysia, Faculty of Medicine, Department of Obstetrics and Gynaecology, Jalan Yaacob Latif, Bandar Tun Razak, Kuala Lumpur, Malaysia.