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Relations of Water to the Propagation
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age groups air pollution areas association atherosclerosis Brooklyn cause cent cerebral vascular disease characteristics classified clinical contagium coronary heart disease countries death rates dental caries determine developed diagnosis distribution effect environment epidemic epidemiological etiological etiological factor evaluation examined exposed exposure females films fluoride food supplement frequency Hodgkin's disease hypertension incidence increase individuals infection rates institutions interpretation interview investigation ischemic heart disease isolated Japan Kern County Kingston large number lesions leukemia lung cancer males measures ment method Moderately mobile mortality mosquito Newburgh observed to expected occupational occurred onset outbreak patients pellagra period persons pesticides positive possible present prevalence problem ratio of observed relationship reported residents roentgenograms roentgenologically rural Salmonella salmonellosis sample selected serotypes smoking socio-cultural specific statistical survey Table tarsalis tion tubercle bacillus tuberculosis types typhoid fever United urban variables vector virus water fluoridation x-ray