Twin studies in schizophrenia and neurosis.
D000328:Adult; D000368:Aged; D003431:Cross-Cultural Comparison; D004200:Diseases in Twins; D004777:Environment; D005260:Female; D005306:Fertilization; D005838:Genotype; D006801:Humans; D008297:Male; D008875:Middle Aged; D009497:Neurotic Disorders / Q000235:genetics*; D010063:Ovum; D012559:Schizophrenia / Q000235:genetics*