Long-Gang Zhao

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BACKGROUND Epidemiological studies have reported inconsistent association between obesity and risk of bladder cancer, and the dose-response relationship between them has not been clearly defined. METHODS We carried out a meta-analysis to summarize available evidence from epidemiological studies on this point. Relevant articles were identified by searching(More)
BACKGROUND Green tea is one of the most widely consumed beverages in Asia. While a possible protective role of green tea against various chronic diseases has been suggested in experimental studies, evidence from human studies remains controversial. METHODS We conducted this study using data from Shanghai Men's Health Study (SMHS) and Shanghai Women's(More)
Observational studies evaluating the relation between dietary or circulating level of beta-carotene and risk of total mortality yielded inconsistent results. We conducted a comprehensive search on publications of PubMed and EMBASE up to 31 March 2016. Random effect models were used to combine the results. Potential publication bias was assessed using(More)
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