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Q36496681-0957239B-F3A8-49C9-8A0C-7571F5789373
Q36496681-0957239B-F3A8-49C9-8A0C-7571F5789373
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http://www.wikidata.org/entity/statement/Q36496681-0957239B-F3A8-49C9-8A0C-7571F5789373
The older the better: are elderly study participants more non-representative? A cross-sectional analysis of clinical trial and observational study samples
P2860
Q36496681-0957239B-F3A8-49C9-8A0C-7571F5789373
BestRank
Statement
http://www.wikidata.org/entity/statement/Q36496681-0957239B-F3A8-49C9-8A0C-7571F5789373
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d88aafda9b2d1abfff48c3132a895c7ca0eb8223
P2860
Potential self-selection bias in a nested case-control study on indoor environmental factors and their association with asthma and allergic symptoms among pre-school children.