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Open Access Research article

The PstI/RsaI and DraI polymorphisms of CYP2E1 and head and neck cancer risk: a meta-analysis based on 21 case-control studies

Kefu Tang12, Yang Li12, Zhao Zhang12, Yunmin Gu1, Yuyu Xiong12, Guoyin Feng4, Lin He123* and Shengying Qin12*

Author Affiliations

1 Bio-X Center, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Shanghai Jiao Tong University, Shanghai, China

2 Institute for Nutritional Sciences, Shanghai Institutes of Biological Sciences, Chinese Academy of Sciences, Shanghai, China

3 Institutes of Biomedical Sciences, Fudan University, Shanghai, China

4 Shanghai Institute of Mental Health, Shanghai, China

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BMC Cancer 2010, 10:575  doi:10.1186/1471-2407-10-575

Published: 22 October 2010

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Additional file 1:

T-test and Funnel plot. Egger's test and Begger's funnel plot results to assess publication bias.

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