title: Twin studies in medical genetics.
mesh_terms: D001724:Birth Weight; D000013:Congenital Abnormalities / Q000196:embryology* / Q000235:genetics; D004200:Diseases in Twins; D005260:Female; D005826:Genetics, Medical; D006801:Humans; D007918:Leprosy / Q000235:genetics; D008297:Male; D008722:Methods; D004364:Pharmaceutical Preparations / Q000378:metabolism; D011247:Pregnancy; D011272:Pregnancy, Multiple; D014427:Twins
chemical_list: D004364:Pharmaceutical Preparations