Walter Willett is the Fredrick John Stare Professor of Epidemiology and Nutrition at Harvard School of Public Health. He is pictured in his home in Cambridge. Stephanie Mitchell/Harvard Staff Photographer
Walter Willett
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Walter Willett is the Fredrick John Stare Professor of Epidemiology and Nutrition at Harvard School of Public Health. He is pictured in his home in Cambridge. Stephanie Mitchell/Harvard Staff Photographer
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