title: [Identical yet different twins].
authors.affiliation: CNESPS, Istituto superiore di sanità, Roma.
authors.forename: Maria Antonietta
authors.initials: MA
authors.lastname: Stazi
authors.forename: Emanuela
authors.initials: E
authors.lastname: Medda
mesh_terms: D044127:Epigenesis, Genetic; D006801:Humans; D014430:Twins, Monozygotic / Q000235:genetics*