Cheng et al. Respond to 'positivity in practice'.

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Bibliographic Details
Title:	Cheng et al. Respond to 'positivity in practice'.
Authors:	Cheng YW (AUTHOR), Hubbard A (AUTHOR), Caughey AB (AUTHOR), Tager IB (AUTHOR)
Source:	American Journal of Epidemiology. Mar2010, Vol. 171 Issue 6, p678-679. 2p.
URL:	51492148
Database:	Academic Search Ultimate

Description
ISSN:	00029262
DOI:	10.1093/aje/kwp438