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Validation of a method for the estimation of food portion size.
Faggiano F, Vineis P, Cravanzola D, Pisani P, Xompero G, Riboli E, Kaaks R. Faggiano F, et al. Among authors: cravanzola d. Epidemiology. 1992 Jul;3(4):379-82. doi: 10.1097/00001648-199207000-00015. Epidemiology. 1992. PMID: 1637903