We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleEffects of social contact and zygosity on 21-y weight change in male twins.AuthorsMcCaffery, Jeanne M.; Franz, Carol E.; Jacobson, KristenPublicationAmerican Journal of Clinical Nutrition, 2011, Vol 94, Issue 2, p404ISSN0002-9165Publication typearticleDOI10.3945/ajcn.111.012195