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Great geographic differences were seen in HD prevalence. The overall prevalence of HD in Asian was 0.40/100,000 (95% confidence interval [CI]: 0.26-0.61), much lower comparing with that of 5.70/100,000 (95% CI: 4.42-7.35) in European, North American, and Australia. Recently, an epidemiologic study of HD in Taiwan (China) showed that the average annual incidence rate was 0.1/100,000, much lower than those of Caucasians (5-10/100,000). Many studies have showed that HD prevalence is closely related to the different genotypes of population. The available information on the world distribution of Huntington's disease (HD) from population surveys and death rate analysis is summarized and discussed in the light of
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Khan et al. (2018) studied this question.
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