MONOZYGOTIC TWINS WITH OBSESSIONAL ILLNESS.
D000293:Adolescent; D004200:Diseases in Twins; D006801:Humans; D009497:Neurotic Disorders; D009771:Obsessive-Compulsive Disorder; D014427:Twins; D014430:Twins, Monozygotic
ADOLESCENCE; DISEASES IN TWINS; NEUROSES, OBSESSIVE COMPULSIVE