1. Department of Surgery, University Malaya Medical Centre; University of Malaya; Kuala Lumpur Malaysia
2. Department of Surgery; University of Hong Kong; Pokfulam Hong Kong
3. Division of General Surgery (Breast Surgery); National University Hospital; Singapore
4. Department of General Surgery; Tan Tock Seng Hospital; Singapore
5. Department of Social and Preventive Medicine, Faculty of Medicine; University of Malaya; Kuala Lumpur Malaysia