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Tweetations for "Impact and Costs of Incentives to Reduce Attrition in Online Trials: Two Randomized Controlled Trials" in the last month

Zarnie Khadjesari, Elizabeth Murray, Eleftheria Kalaitzaki, Ian R. White, Jim McCambridge, Simon G. Thompson, Paul Wallace, Christine Godfrey
J Med Internet Res 2011 (Mar 02); 13(1):e26 

ALL TIME (3)  IN THE LAST MONTH (0)  IN THE LAST SIX MONTHS (0)  IN THE LAST YEAR (0)

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