[The early history of the Danish twin registry].
D000047:Academies and Institutes / Q000266:history*; D003718:Denmark; D005314:Embryonic and Fetal Development; D004777:Environment; D005823:Genetics / Q000266:history*; D049673:History, 20th Century; D009098:Multiphasic Screening / Q000266:history*; D012042:Registries; D012106:Research / Q000266:history*; D014427:Twins; D014495:Universities / Q000266:history
Det Danske Tvillingregisters tidlige historie.