Reproducibility and Validity of an Expanded Self-Administered Semiquantitative Food Frequency Questionnaire among Male Health ProfessionalsEric B. Rimm, Walter C. Willett, Edward L. Giovannucci et al.|American Journal of Epidemiology|1992Cited by 2.1k
Reproducibility and validity of food intake measurements from a semiquantitative food frequency questionnaireDiane Feskanich, Walter C. Willett, Eric B. Rimm et al.|Journal of the American Dietetic Association|1993Cited by 1.1k
Correlations of Vitamin A and E Intakes with the Plasma Concentrations of Carotenoids and Tocopherols among American Men and WomenAlberto Ascherio, Walter C. Willett, Eric B. Rimm et al.|Journal of Nutrition|1992Cited by 327