[1] Natl Univ Hlth Syst, Alexandra Hosp, Med Affairs, Res Innovat & Enterprise, Singapore, Singapore
[2] Natl Univ Singapore, Yong Loo Lin Sch Med, Singapore, Singapore
[3] Natl Univ Singapore, Chief Operating Off, Singapore, Singapore
[4] George Mason Univ, Coll Publ Hlth, Sch Nursing, Fairfax, VA USA
[5] Natl Univ Singapore Hosp, Dept Med, Div Resp & Crit Care Med, Singapore, Singapore