title: Introductory paragraph.
mesh_terms: D001007:Anxiety / Q000534:rehabilitation*; D001521:Behavior Therapy / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D010358:Patient Participation / Q000706:statistics & numerical data; D010506:Periodicals as Topic; D011594:Psychometrics; D012046:Rehabilitation / Q000379:methods*