[1] Univ Kansas, Med Ctr, Sch Nursing, Kansas City, KS 66103 USA
[2] Univ Louisville, Sch Med, Louisville, KY 40292 USA
[3] Univ Louisville, Sch Nursing, Louisville, KY 40292 USA
[4] Univ Louisville, Dept Med Pulm, Louisville, KY 40292 USA
[5] Case Western Reserve Univ, Pulm Crit Care & Sleep Med, Cleveland, OH 44106 USA
[6] Univ Louisville, Sch Publ Hlth, Louisville, KY 40292 USA