1. Alice Lee Centre for Nursing Studies, Yong Loo Lin School of Medicine, National University of Singapore , 10 Medical Dr, Singapore 117597 , Singapore
2. Dietetics Department, National University Hospital , 5 Lower Kent Ridge Road Singapore 119074 , Singapore
3. Department of Surgery, National University Hospital , 5 Lower Kent Ridge Road Singapore 119074 , Singapore
4. Rehabilitation Department, National University Hospital , 5 Lower Kent Ridge Road Singapore 119074 , Singapore