[1] Johns Hopkins Univ, Sch Med, Dept Phys Med & Rehabil, 600 N Wolfe St,Phipps 174, Baltimore, MD 21287 USA
[2] Johns Hopkins Univ, Sch Med, Outcomes Crit Illness & Surg Res Grp, Baltimore, MD USA
[3] Radboud Univ Nijmegen, Med Ctr, Radboud Inst Hlth Sci, Dept Intens Care Med, Nijmegen, Netherlands
[4] Gelre Hosp, Expertise Ctr Intens Care Rehabil Apeldoorn ExpIR, Dept Intens Care Med, Apeldoorn, Netherlands