title: Identical and fraternal: when words mislead.
authors.forename: N L
authors.initials: NL
authors.lastname: Segal
mesh_terms: D001294:Attitude to Health; D003144:Communication Barriers; D004200:Diseases in Twins / Q000235:genetics; D006801:Humans; D010290:Parents / Q000193:education / Q000523:psychology; D012660:Semantics; D009626:Terminology as Topic; D014429:Twins, Dizygotic / Q000235:genetics / Q000523:psychology; D014430:Twins, Monozygotic / Q000235:genetics / Q000523:psychology