Evaluation of an identification method of twin pairs based on the Danish national identification number system.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D003201:Computers; D003718:Denmark; D004200:Diseases in Twins; D005260:Female; D006801:Humans; D008297:Male; D012042:Registries