| http://www.w3.org/ns/prov#value | - In the SWHS, information on usual dietary intake was collected at cohort enrollment from all participants and updated 2 to 3 years later for approximately 91% of the cohort.21 We used a comprehensive, quantitative food-frequency questionnaire (FFQ) to assess usual dietary intake that covered virtually all soy foods commonly consumed in Shanghai, including soy milk, tofu, fried tofu, dried or press
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