[1] Brown Univ, Warren Alpert Med Sch, Dept Psychiat, Neuropsychol Program, Providence, RI 02912 USA
[2] Hasbro Childrens Hosp, Dept Pediat, Div Pediat Hematol & Oncol, Providence, RI USA
[3] Rhode Isl Hosp, Dept Psychiat, Bradley Hasbro Childrens Res Ctr, Providence, RI USA