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Dietary assessment in the elderly: application of a two-step semiquantitative food frequency questionnaire for epidemiologic studies

Publication year 1999
Published in Journal of Human Nutrition and Dietetics
Authors P.T.V.M. de Jong, K. Klipstein-Grobusch, J.C.M. Witteman, J.H. den Breeijen, R.A. Goldbohm, A. Hofman, H.A. Pols, D.E. Grobbee,

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