REPRODUCIBILITY AND VALIDITY OF A SEMIQUANTITATIVE FOOD FREQUENCY QUESTIONNAIRE

American Journal of Epidemiology - Tập 122 Số 1 - Trang 51-65 - 1985
Walter C. Willett1,2, Laura Sampson2, Meir J. Stampfer1,2, Bernard Rosner2, Christopher Bain3, Jelia C. Witschi1, Charles H. Hennekens2, Frank E. Speizer2
1Departments of Epidemiology and Nutrition, Harvard School of Public HealthBoston, MA
2The Channing Laboratory, Department of Medicine, Harvard Medical School and Brigham and Women's HospitalBoston, MA
3Department of Social and Preventive Medicine, University of QueenslandAustralia

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