human 27 obsessive compulsive disorder 25 Article 24 Humans 21 female 19 male 18 Obsessive-Compulsive Disorder 14 major clinical study 14 Female 13 adult 13 controlled study 13 Male 12 anxiety disorder 10 anxiety 9 depression 9 mental disease 9 Child 7 attention deficit disorder 7 child 7 disease severity 7 major depression 7 priority journal 7 psychology 7 Adolescent 6 Adult 6 adolescent 6 pathophysiology 6 Anxiety Disorders 5 Obsessive-compulsive disorder 5 connectome 5