The Danish twin register.
D003415:Crime; D003718:Denmark; D003920:Diabetes Mellitus / Q000453:epidemiology; D004200:Diseases in Twins; D005260:Female; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000453:epidemiology; D009369:Neoplasms / Q000453:epidemiology; D010437:Peptic Ulcer / Q000453:epidemiology; D011247:Pregnancy; D012907:Smoking; D014427:Twins