[1] Ho Chi Minh Communist Youth Union, Youth Res Inst, Hanoi 100000, Vietnam
[2] Hanoi Med Univ, Hanoi 100000, Vietnam
[3] Nguyen Tat Thanh Univ, Ctr Excellence Behav Med, Ho Chi Minh City 70000, Vietnam
[4] Nguyen Tat Thanh Univ, Ctr Excellence Evidence Based Med, Ho Chi Minh City 70000, Vietnam
[5] Inst Populat Family & Children Studies, Hanoi 100000, Vietnam
[6] Nguyen Tat Thanh Univ, Ctr Excellence Hlth Serv & Syst Res, Hanoi 70000, Vietnam
[7] Duy Tan Univ, Inst Global Hlth Innovat, Da Nang 550000, Vietnam
[8] Vietnam Germany Hosp, Dept Lower Limb Surg, Hanoi 100000, Vietnam
[9] Hanoi Med Univ, Inst Prevent Med & Publ Hlth, Hanoi 100000, Vietnam
[10] Johns Hopkins Univ, Bloomberg Sch Publ Hlth, Baltimore, MD 21205 USA
[11] Natl Univ Singapore Hosp, Dept Psychol Med, Singapore 119074, Singapore
[12] Natl Univ Singapore, Yong Loo Lin Sch Med, Dept Psychol Med, Singapore 119077, Singapore