[1] Duke Univ, Sch Nursing, Durham, NC 27708 USA
[2] Duke Univ, Sch Med, Durham, NC 27708 USA
[3] Duke Univ, Div Hematol, Durham, NC 27708 USA
[4] Mt Sinai Med Ctr, Icahn Sch Med, New York, NY 10029 USA
[5] Case Western Reserve Univ, Sch Med, Cleveland, OH 44106 USA
[6] Univ Cincinnati, Dept Emergency Med, Cincinnati, OH 45221 USA
[7] Univ Cincinnati, Dept Emergency Med, Cincinnati, NC USA