Psychopathology in 15,909 pairs of veteran twins: evidence for a genetic factor in the pathogenesis of schizophrenia and its relative absence in psychoneurosis.
D000328:Adult; D004200:Diseases in Twins; D004381:Duodenal Ulcer / Q000175:diagnosis; D005824:Genetics, Behavioral; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000175:diagnosis; D008722:Methods; D008875:Middle Aged; D009497:Neurotic Disorders / Q000235:genetics*; D012559:Schizophrenia / Q000235:genetics*; D012737:Sex Factors