Reproducibility and Validity of an Expanded Self-Administered Semiquantitative Food Frequency Questionnaire among Male Health Professionals
Rimm, Eric B. ; Giovannucci, Edward L. ; Stampfer, Meir J. ; Colditz, Graham A. ; Litin, Lisa B. ; Willett, Walter C.
American journal of epidemiology, 1992-05, Vol.135 (10), p.1114-1126 [Periódico revisado por pares]BALTIMORE: Oxford University Press
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