Greater family size is associated with less cancer risk: an ecological analysis of 178 countries.

BMC Cancer · 2018 · PMC6156945 · PMID 30257658

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a clear trendno p-value reported

Relationships between greater family size /household size and lung cancer [ 5 , 15 ] and stomach cancer (females) [ 14 ] were explored, but without much success of seeing a clear trend.

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