Characteristic features of tumours in children.
D000367:Age Factors; D002031:Bulgaria; D002273:Carcinogens; D002648:Child; D002675:Child, Preschool; D003582:Cytogenetics; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D009369:Neoplasms / Q000453:epidemiology* / Q000209:etiology / Q000235:genetics; D009373:Neoplasms, Germ Cell and Embryonal / Q000453:epidemiology; D009380:Neoplasms, Nerve Tissue / Q000453:epidemiology; D009381:Neoplasms, Radiation-Induced
D002273:Carcinogens