Non-Hodgkin's lymphoma and nitrate in drinking water: a study in Yorkshire, United Kingdom.


EDITOR,— DiVerences in mortality between areas have been found to be related to the socioeconomic conditions of the area. 2 However, people also move to improve their physical and social environment, and the health status of the migrants diVers considerably from that of the non-migrants. Recently, Davey Smith and collegues found that mortality, measured… (More)

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