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A six-month crossover chemoprevention clinical trial of tea in smokers and non-smokers: methodological issues in a feasibility study

Chiranjeev Dash, Fung-Lung Chung, Joy Ann Phillips Rohan, Emily Greenspan, Patrick D Christopher, Kepher Makambi, Yukihiko Hara, Kenneth Newkirk, Bruce Davidson and Lucile L Adams-Campbell*

BMC Complementary and Alternative Medicine 2012, 12:96  doi:10.1186/1472-6882-12-96