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1471-2288-11-33
1471-2288-11-33
http://dx.doi.org/10.1186/1471-2288-11-33
Effect of reminders on mitigating participation bias in a case-control study.
P356
Q33858834-93A9560F-6E06-423B-A5C8-281884DC0A40
P356
1471-2288-11-33
http://dx.doi.org/10.1186/1471-2288-11-33