[1] Childrens Hosp Philadelphia, Oncol, Philadelphia, PA USA
[2] Cincinnati Childrens Hosp, Patient & Family Wellness Ctr, Canc & Blood Dis Inst, Div Behav Med & Clin Psychol, Cincinnati, OH USA
[3] Childrens Hosp Los Angeles, Canc & Blood Dis Inst, Los Angeles, CA USA
[4] Univ Penn, Perelman Sch Med, Pediat, Philadelphia, PA 19104 USA
[5] Drexel Univ, Coll Med, Philadelphia, PA USA
[6] Univ Penn, Sch Nursing Family & Commun Hlth, Philadelphia, PA USA
[7] Univ Southern Calif, Keck Med, Usc Norris Comprehens Canc Ctr, Los Angeles, CA USA
[8] Univ Cincinnati, Pediat, Coll Med, Cincinnati, OH USA