Socioeconomic factors and all cause and cause-specific mortality among older people in Latin America, India, and China: a population-based cohort study.

PLoS Med · 2012 · PMC3289608 · PMID 22389633

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may be significantno p-value reported

While there may have been some misattribution, with a failure to detect malignancy and chronic cardiac failure, the regional patterning may be significant.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.