摘要：The author of this paper suggests that the very considerable geographical variations in leukaemia mortality warrant continued investigation. However, studies attempting to relate leukaemia mortality to variation in levels of natural radioactivity might to advantage be confined, for the moment, to areas in which differences in natural radioactivity levels are substantial. The investigation of certain groups of patients exposed to ionizing radiation from medical sources is also important to an understanding of the etiology of leukaemia. There are other groups in which the leukaemia experience is unusual and which might form the basis for further investigation. These include mongolian idiots and their relatives, children aged 3-4 years, children in certain maternal age and parity groups, certain segments of the population of Israel, and persons occupationally exposed to benzol. Full text Full text is available as a scanned copy of the original print version. Get a printable copy (PDF file) of the complete article (948K), or click on a page image below to browse page by page. Links to PubMed are also available for Selected References . 579 580 581 582 583 584
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