[1] Natl Univ Singapore, Yong Loo Lin Sch Med, Singapore, Singapore
[2] Natl Canc Ctr Singapore, Div Support & Palliat Care, Singapore, Singapore
[3] Natl Univ Singapore, Natl Univ Singapore Lib, Med Lib, Singapore, Singapore
[4] Duke NUS Med Sch, Singapore, Singapore
[5] Natl Canc Ctr Singapore, Div Canc Educ, Singapore 11 Hosp Dr, Singapore 169610, Singapore
[6] Univ Liverpool, Palliat Care Unit Liverpool, Liverpool, Merseyside, England
[7] Natl Univ Singapore, Ctr Biomed Eth, Singapore, Singapore
[8] Dover Pk Hosp, Palliat Care Ctr Excellence Res & Educ Singapore, PalC, Singapore, Singapore