title: Twin studies in medical research.
authors.forename: A M
authors.initials: AM
authors.lastname: Macdonald
mesh_terms: D030342:Genetic Diseases, Inborn / Q000235:genetics*; D006801:Humans; D012106:Research; D014427:Twins; D014429:Twins, Dizygotic / Q000235:genetics; D014430:Twins, Monozygotic / Q000235:genetics