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OBJECTIVE To test whether improvement in household coal stoves affected the incidence of chronic obstructive pulmonary disease (COPD) in Xuanwei County, China. DESIGN Retrospective cohort study (follow-up 1976-92) comparing incidence of COPD between groups with and without chimneys. PARTICIPANTS 20,453 people born into homes with unvented coal(More)
Residents of the Bayingnormen region of Inner Mongolia have been exposed to arsenic-contaminated well water for over 20 years, but relatively few studies have investigated health effects in this region. We surveyed one village to document exposure to arsenic and assess the prevalence of arsenic-associated skin lesions and self-reported morbidity.(More)
BACKGROUND In Xuanwei County, China, unvented indoor coal burning is strongly associated with increased risk of lung cancer and chronic obstructive pulmonary disease. However, the impact of coal burning and stove improvement on risk of pneumonia is not clear. METHODS We conducted a retrospective cohort study among all farmers born 1917 through 1951 and(More)
We conducted a retrospective mortality study in an Inner Mongolian village exposed to well water contaminated by arsenic since the 1980s. Deaths occurring between January 1, 1997 and December 1, 2004 were classified according to underlying cause and water samples from household wells were tested for total arsenic. Heart disease mortality was associated with(More)
Selection and genetic drift can create genetic differences between populations. Cytokines and chemokines play an important role in both hematopoietic development and the inflammatory response. We compared the genotype frequencies of 45 SNPs in 30 cytokine and chemokine genes in two healthy Chinese populations and one Caucasian population. Several SNPs in(More)
Over half of the world's population is exposed to household air pollution from the burning of solid fuels at home. Household air pollution from solid fuel use is a leading risk factor for global disease and remains a major public health problem, especially in low- and mid-income countries. This is a particularly serious problem in China, where many people(More)
As chronic diseases have become very common recently, lots of people are faced with sub health problems. Two major reasons contributing to these problems are the increasingly busy lifestyle and working pressure. Therefore, People have no time to monitor their health although they are more and more concerned with health problems. This problem may be settled(More)
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