[1] Chulalongkorn Univ, Coll Publ Hlth Sci, Bangkok, Thailand
[2] VinUniv, Univ Med Ctr Ho Chi Minh City, Vietnam Coll Hlth Sci, Social Work Dept, Hanoi, Vietnam
[3] Univ Med Ctr Ho Chi Minh City, Geriatr & Palliat Care Dept, Ho Chi Minh City, Vietnam
[4] Univ Med & Pharm Ho Chi Minh city, Dept Palliat Care, Ho Chi Minh City, Vietnam
[5] Kings Coll London, Cicely Saunders Inst, Florence Nightingale Fac Nursing Midwifery & Palli, London, England
[6] McGill Univ, Inst Hlth Sci Educ, Fac Med & Hlth Sci, Montreal, PQ, Canada
[7] Univ Med & Pharm, Fac Med, Ho Chi Minh City, Vietnam
[8] Harvard Med Sch, Program Global Palliat Care, Boston, MA USA