We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleEnergy density, portion size, and eating occasions: contributions to increased energy intake in the United States, 1977-2006.AuthorsDuffey KJ; Popkin BMPublicationPLoS medicine, 2011, Vol 8, Issue 6, pe1001050ISSN1549-1676Publication typearticleDOI10.1371/journal.pmed.1001050