1. Pharmacotherapeutics Unit, Department of Medicine, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia;
2. Clinical Oncology Unit, University Malaya Medical Centre, Kuala Lumpur, Malaysia;
3. Radiotherapy & Oncology, Universiti Kebangsaan Malaysia Medical Centre, Jalan Yaacob Latif, Bandar Tun Razak, Kuala Lumpur, Malaysia