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The operational key for this scheme was in Harvard, where "one of the researchers was the chairman of Harvard's Public Health Nutrition Department and an ad hoc member of SRF's board." (Source) Their review was published in a 1967 issue of the New England Journal of Medicine.

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The operational key for this scheme was in Harvard, where "one of the researchers was the chairman of Harvard's Public Health Nutrition Department and an ad hoc member of SRF's board." (Source) Their review was published in a 1967 issue of the New England Journal of Medicine.

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