[1] Childrens Hosp, Dept Pediat Psychol, Columbus, OH 43205 USA
[2] Oregon Hlth & Sci Univ, Dept Anesthesiol & Peri Operat Med, Portland, OR 97201 USA
[3] Childrens Hosp, Med Ctr, Headache Ctr, Cincinnati, OH 45229 USA
[4] Univ Cincinnati, Coll Med, Cincinnati, OH USA
[5] Childrens Hosp, Med Ctr, Div Behav Med & Clin Psychol, Cincinnati, OH 45229 USA