Letter: Factors affecting recognition of infant leukaemias and lymphomas.
D003645:Death, Sudden; D004200:Diseases in Twins; D006801:Humans; D007223:Infant; D007226:Infant Mortality; D007231:Infant, Newborn; D007938:Leukemia / Q000175:diagnosis*; D008223:Lymphoma / Q000175:diagnosis*; D012621:Seasons