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  • Eric B Rimm, Edward L. Giovannucci, Meir J. Stampfer, Graham A. Colditz, Lisa B. Litin, Walter C Willett
  • Medicine
  • American journal of epidemiology
  • 1992 (First Publication: 15 May 1992)
  • The authors assessed the reproducibility and validity of an expanded 131-item semiquantitative food frequency questionnaire used in a prospective study among 51,529 men. The form was administered byContinue Reading
  • Frank B Hu, Tricia Y. Li, Graham A. Colditz, Walter C Willett, Joann E. Manson
  • Computer Science, Medicine
  • JAMA
  • 2003 (First Publication: 9 April 2003)
  • CONTEXT Current public health campaigns to reduce obesity and type 2 diabetes have largely focused on increasing exercise, but have paid little attention to the reduction of sedentary behaviors. Continue Reading
  • Heike A. Bischoff-Ferrari, Edward Giovannucci, Walter C Willett, Thomas Dietrich, B. Dawson-Hughes
  • Medicine
  • The American journal of clinical nutrition
  • 2006 (First Publication: 1 June 2006)
  • Recent evidence suggests that vitamin D intakes above current recommendations may be associated with better health outcomes. However, optimal serum concentrations of 25-hydroxyvitamin D [25(OH)D]Continue Reading