[1] Mahidol Univ, Fac Publ Hlth, Dept Occupat Hlth & Safety, Bangkok, Thailand
[2] Univ Occupat & Environm Hlth, Occupat Hlth Training Ctr, Kitakyushu, Fukuoka, Japan
[3] Natl Ctr Global Hlth & Med, Bur Int Hlth Cooperat, Tokyo, Japan
[4] Thanh Tay Univ, Fac Nursing, Dept Infect Control, Hanoi, Vietnam
[5] Hanoi Sch Publ Hlth, Hlth Management Training Inst, Dept Hosp Management, Hanoi, Vietnam
[6] St Paul Hosp, Neurosurg Dept, Hanoi, Vietnam
[7] Dong Da Hosp, Hanoi, Vietnam
[8] James Cook Univ, Coll Publ Hlth Med & Vet Sci, Townsville, Qld, Australia