title: [Proceedings and abstracts of the 2nd Meeting of the Polish Society of Pediatric Oncology and Hematology. 29-30 May 2003, Krakow].
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D006402:Hematologic Diseases; D006405:Hematology; D006801:Humans; D007223:Infant; D008495:Medical Oncology; D009369:Neoplasms