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Q33858834-A45978B2-1123-4212-8739-6B5015C2B82D
Q33858834-A45978B2-1123-4212-8739-6B5015C2B82D
BestRank
Statement
http://www.wikidata.org/entity/statement/Q33858834-A45978B2-1123-4212-8739-6B5015C2B82D
Effect of reminders on mitigating participation bias in a case-control study.
P2860
Q33858834-A45978B2-1123-4212-8739-6B5015C2B82D
BestRank
Statement
http://www.wikidata.org/entity/statement/Q33858834-A45978B2-1123-4212-8739-6B5015C2B82D
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type
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73f30d867f624c6971b76670800863626133851a
P2860
Contacting controls: are we working harder for similar response rates, and does it make a difference?