Sibship size and mental illness.
D000328:Adult; D000368:Aged; D000437:Alcoholism / Q000453:epidemiology; D001722:Birth Order; D003863:Depression / Q000453:epidemiology; D005190:Family; D005260:Female; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000209:etiology / Q000235:genetics*; D008875:Middle Aged; D019965:Neurocognitive Disorders / Q000453:epidemiology; D009497:Neurotic Disorders / Q000453:epidemiology; D010554:Personality Disorders / Q000453:epidemiology; D011618:Psychotic Disorders / Q000453:epidemiology; D012606:Scotland; D012801:Sibling Relations; D012923:Social Class