title: Response to the Letter to the Editor from Bleyer.
authors.affiliation: 1 International Outreach Program, St. Jude Children's Research Hospital , Memphis, Tennessee.|2 Department of Oncology, St. Jude Children's Research Hospital , Memphis, Tennessee.
authors.forename: Alia
authors.initials: A
authors.lastname: Zaidi
authors.affiliation: 2 Department of Oncology, St. Jude Children's Research Hospital , Memphis, Tennessee.
authors.forename: Liza-Marie
authors.initials: LM
authors.lastname: Johnson
authors.affiliation: 3 Division of General and Health Studies, Baptist College of Health Sciences , Memphis, Tennessee.
authors.forename: Christopher L
authors.initials: CL
authors.lastname: Church
authors.affiliation: 4 Department of Pediatric Hematology and Oncology, Hospital Infantil Dr. Robert Reid Cabral , Santo Domingo, Dominican Republic .
authors.forename: Wendy C
authors.initials: WC
authors.lastname: Gomez-Garcia
authors.affiliation: 5 Department of Pediatric Hematology and Oncology, St. Jude Tri-Cities Affiliate , Johnson City, Tennessee.
authors.forename: Marcela I
authors.initials: MI
authors.lastname: Popescu
authors.affiliation: 6 Department of Pediatric Hematology and Oncology, Texas Children's Hospital , Houston, Texas.
authors.forename: Judith F
authors.initials: JF
authors.lastname: Margolin
authors.affiliation: 2 Department of Oncology, St. Jude Children's Research Hospital , Memphis, Tennessee.
authors.forename: Raul C
authors.initials: RC
authors.lastname: Ribeiro