1. Department of Surgery, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor
2. Multidisciplinary Clinic, Prince Court Medical Centre, 39, Jalan Kia Peng, 50450 Kuala Lumpur, Wilayah Persekutuan, Malaysia
3. Department of Surgery, Hospital Kuala Lumpur, Kuala Lumpur, Malaysia