[1] Brown Univ, Alpert Med Sch, Providence, RI 02912 USA
[2] Miriam Hosp, Providence, RI 02906 USA
[3] Case Western Reserve Univ, Frances Payne Bolton Sch Nursing, Cleveland, OH 44106 USA
[4] Kent State Univ, Kent, OH 44242 USA
[5] Univ Hosp Cleveland, Med Ctr, Cleveland, OH 44106 USA