title: Twin studies in medical research.
authors.forename: M M
authors.initials: MM
authors.lastname: Braun
authors.forename: N
authors.initials: N
authors.lastname: Caporaso
mesh_terms: D001724:Birth Weight; D005260:Female; D030342:Genetic Diseases, Inborn / Q000235:genetics*; D006801:Humans; D007231:Infant, Newborn; D008423:Maternal Age; D012107:Research Design; D014427:Twins / Q000235:genetics