Concordance in twins: methods and interpretation.
D004200:Diseases in Twins; D005260:Female; D014644:Genetic Variation; D006801:Humans; D008297:Male; D008722:Methods; D008954:Models, Biological; D010375:Pedigree; D010641:Phenotype; D011247:Pregnancy; D011336:Probability; D012641:Selection, Genetic; D012737:Sex Factors; D014427:Twins