title: [Principles of research in twins].
authors.forename: M
authors.initials: M
authors.lastname: Koskenvuo
mesh_terms: D004200:Diseases in Twins / Q000235:genetics*; D014644:Genetic Variation / Q000235:genetics; D006801:Humans; D008957:Models, Genetic; D014427:Twins / Q000235:genetics*
vernacular_title: Kaksostutkimuksen periaatteet.