title: Duplication of Philadelphia chromosome and trisomy of chromosome 21 in a pediatric patient with acute lymphoblastic leukemia.
authors.affiliation: Hematology/Oncology Unit, First Department of Pediatrics, University of Athens, Aghia Sophia Children's Hospital, Thivon & Levadias, 11527 Goudi-Athens, Greece. katharinakats@hotmail.com
authors.forename: Katerina
authors.initials: K
authors.lastname: Katsibardi
authors.forename: Maria
authors.initials: M
authors.lastname: Braoudaki
authors.forename: Stefanos I
authors.initials: SI
authors.lastname: Papadhimitriou
authors.forename: Kalliopi
authors.initials: K
authors.lastname: Karamolegou
authors.forename: Fotini
authors.initials: F
authors.lastname: Tzortzatou-Stathopoulou