Allergy in 7000 twin pairs.
D000367:Age Factors; D000368:Aged; D001168:Arthritis / Q000235:genetics; D001249:Asthma / Q000150:complications / Q000235:genetics; D003872:Dermatitis / Q000235:genetics; D003877:Dermatitis, Contact / Q000150:complications / Q000235:genetics; D004200:Diseases in Twins; D004485:Eczema / Q000150:complications / Q000235:genetics; D004781:Environmental Exposure; D005260:Female; D005512:Food Hypersensitivity / Q000235:genetics; D005838:Genotype; D006801:Humans; D006816:Huntington Disease / Q000235:genetics; D006967:Hypersensitivity / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D008881:Migraine Disorders / Q000235:genetics; D012213:Rheumatic Fever / Q000235:genetics; D006255:Rhinitis, Allergic, Seasonal / Q000150:complications / Q000235:genetics; D012737:Sex Factors; D011795:Surveys and Questionnaires; D014581:Urticaria / Q000235:genetics