[1] Natl Canc Ctr Singapore, Div Support & Palliat Care, 11 Hosp Dr, Singapore 169610, Singapore
[2] Natl Univ Singapore, Yong Loo Lin Sch Med, Singapore, Singapore
[3] Univ Liverpool, Palliat Care Inst Liverpool, Acad Palliat & End Life Care Ctr, North West Canc Res Ctr, Liverpool, Merseyside, England
[4] Natl Univ Singapore, Ctr Biomed Eth, Singapore, Singapore
[5] Duke NUS Grad Med Sch, Singapore, Singapore
[6] Singapore Gen Hosp, Singapore, Singapore
[7] Natl Univ Singapore, Natl Univ Singapore Libraries, Med Lib, Singapore, Singapore
[8] Gulf Med Univ, Ajman, U Arab Emirates
[9] Natl Canc Ctr Singapore, Dept Med Oncol, Singapore, Singapore
[10] Natl Univ Hlth Syst, Dept Family Med, Singapore, Singapore