title: Letter to the editor.
authors.affiliation: The Rina Zaizov Department of Pediatric Hematology Oncology, Schneider Children's Medical Center of Israel, 14 Kaplan Street, Petah Tikva 49202, Israel. Electronic address: icohen@tau.ac.il.
authors.forename: Ian Joseph
authors.initials: IJ
authors.lastname: Cohen